Everybody's Libraries

Free Decimal Correspondence

This is version 0.06 of the Free Decimal Correspondence (FDC), edited by John Mark Ockerbloom, released August 19, 2010.

More information about the FDC can be found here.

A machine-processable text file of the FDC can be downloaded here. The HTML rendition shown below is automatically generated from that text file. The text file includes some additional comments not shown here that may be useful for adapting and using the FDC.

Boldface indicates authorized terms from the Library of Congress Subject Headings.

The Free Decimal Correspondence is dedicated to the public domain. It can therefore be used, copied, and adapted by anyone for any purpose, without anyone’s permission required.


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To the extent possible under law, John Mark Ockerbloom has waived all copyright and related or neighboring rights to the Free Decimal Correspondence. This work is published from the United States.


  • 000: General works, books and libraries, information sciences
      • 001: Intellectual life
      • 002: Books — History ; or, History of the book
      • 003: System theory
      • 004: Computers and Computer science
      • 005: Computer programming
      • 006: Cognitive science
        • 006.6: Computer graphics
    • 010: Bibliography
      • 011: General bibliographies and Universal catalogs
      • 012: Bibliographies of individuals
      • 014: Anonyms and pseudonyms — Bibliography ; or, Bibliographies of pseudonymous and anonymous works
      • 015: Bibliography, national ; or, Bibliographies of specific countries
      • 016: Bibliographies of special subjects
      • 017-019: Library catalogs
      • 017: Classified catalogs
      • 018: Author catalogs
      • 019: Dictionary catalogs
    • 020: Library science
      • 020-025: Science and administration of libraries in general
      • 021: Scope, usefulness, founding, and supporting of libraries
      • 022: Library architecture and Library buildings
      • 023: Library employees
      • 025: Library administration and Library departments
      • 026-027: Special libraries and collections; history, description and management
      • 026: Special libraries
      • 027: General libraries and Library reports, etc.
      • 028: Books and reading
    • 030: Encyclopedias
      • 031: American encyclopedias
      • 032: British encyclopedias
      • 033: German encyclopedias
      • 034: French encyclopedias
      • 035: Italian encyclopedias
      • 036: Spanish encyclopedias
      • 037: Slavic encyclopedias
      • 038: Scandinavian encyclopedias
      • 039: Encylopedias of other languages
    • 050: Periodicals ; or, General periodicals
      • 051: American periodicals
      • 052: English periodicals and British Periodicals
      • 053: German periodicals
      • 054: French periodicals
      • 055: Italian periodicals
      • 056: Spanish periodicals
      • 057: Slavic periodicals and Russian periodicals
      • 058: Scandinavian periodicals
      • 059: Periodicals of other languages
    • 060: Associations, institutions, etc. ; or, Societies
      • 061: American societies
      • 062: English societies
      • 063: German societies
      • 064: French societies
      • 065: Italian societies
      • 066: Spanish societies
      • 067: Slavic societies
      • 068: Other learned societies
      • 069: Museums
    • 070: Journalism and Newspapers
      • 071: American newspapers
      • 072: English newspapers
      • 073: German newspapers
      • 074: French newspapers
      • 075: Italian newspapers
      • 076: Spanish newspapers
      • 077: Slavic newspapers
      • 078: Scandinavian newspapers
      • 079: Other newspapers
    • 080: Anthologies and Quotations
      • 081: American anthologies
      • 082: English anthologies
      • 083: German anthologies
      • 084: French anthologies
      • 085: Italian anthologies
      • 086: Spanish anthologies
      • 087: Slavic anthologies
      • 088: Scandinavian anthologies
      • 089: Anthologies for other languages
    • 090: Rare books
      • 091: Manuscripts and Autographs
      • 092: Block books
      • 093: Early printed books and Incunabula
      • 094: Privately printed books and Rare printing
      • 095: Rare bindings
      • 096: Rare illustrations or materials
      • 097: Bookplates and Book ownership
      • 098: Prohibited books and Lost books and Imaginary books and libraries
      • 099: Other book rarities and Curiosa and Minute size, etc.
  • 100: Philosophy and psychology
      • 101: Philosophy — Introductions and Methodology
      • 102: Philosophy outlines
      • 103: Philosophy — Dictionaries and Philosophy encyclopedias
      • 105: Philosophy — Periodicals and Psychology — Periodicals
      • 106: Philosophical societies, transactions, etc.
      • 107: Philosophy study and teaching
      • 108: Philosophy collections
      • 109: Philosophy — History ; or, History of philosophy
    • 110: Metaphysics
      • 111: Ontology
      • 113-119: Cosmology
      • 114: Space (in the philosophical sense)
      • 115: Time — Philosophy
      • 116: Movement (Philosophy) and Evolution (in the philosophical sense)
      • 117: Matter
      • 118: Power (Philosophy)
      • 119: Mathematics — Philosophy
    • 120: Special metaphysical topics
      • 121: Knowledge, Theory of ; or, Theory of knowledge
      • 122: Causation ; or, Cause and effect
      • 123: Free will and determinism and Necessity (Philosophy)
      • 124: Teleology
      • 126: Self (Philosophy) and Consciousness
      • 127: Unconsciousness and Automata
      • 128: Soul and Philosophical anthropology and Human beings
      • 129: Immortality and Future life ; or, Life after death (from philosophical or not-specifically-Christian perspectives)
    • 130: Mind and body and Parapsychology
      • 131: Mental health
      • 133: Occultism
      • 135: Dreams
      • 137: Personality and Temperament
      • 138: Physiognomy
      • 139: Phrenology
    • 140: Ideology ; or, Philosophical systems
      • 141: Idealism and Transcendentalism
      • 142: Criticism (Philosophy)
      • 143: Intuition ; or, Philosophical intuition
      • 144: Empiricism and Humanism and Pragmatism
      • 145: Sensationalism
      • 146: Materialism and Positivism
      • 147: Pantheism and Monism
      • 148: Eclecticism
      • 149: Other philosophical systems
    • 150: Psychology
      • 152: Psychophysiology
      • 153: Thought and thinking
      • 154: Subconsciousness
      • 155: Creative ability and Imagination and Developmental psychology
      • 156: Psychology, Comparative
      • 158: Sensibility and Emotions and Affections
    • 160: Logic
      • 161: Induction (Logic)
      • 162: Deductive logic
      • 165: Fallacies (Logic) and Paradox
      • 166: Syllogism and Enthymeme (Logic)
      • 167: Hypothesis
      • 168: Persuasion (Rhetoric) ; or, Argument and persuasion
      • 169: Analogy
    • 170: Ethics
      • 171: Theories of ethics and Philosophy of ethics
      • 172: Political ethics
      • 173: Family ethics
      • 174: Professional ethics
        • 174.1: Clergy — Professional ethics
        • 174.2: Bioethics and Medical ethics
        • 174.3: Legal ethics
        • 174.4: Business ethics
        • 174.6: Gambling
        • 174.7: Honor and Honesty
        • 174.9: Other professional ethical issues
      • 175: Ethics of amusements
      • 176: Sexual ethics
      • 177: Social ethics
      • 178: Temperance and Stimulants and narcotics ; or, Ethics of consumption
      • 179: Other ethical topics
    • 180: Philosophy, Ancient ; or, Ancient, Medieval and Eastern philosophy
      • 181: Philosophy, Asian ; or, Asian philosophy
      • 182: Ancient Greek philosophy
      • 183: Sophists (Greek philosophy) and Socrates
      • 184: Plato and Platonists
      • 185: Aristotle and Peripatetics
      • 186: Skeptics (Greek philosophy) and Neoplatonism
      • 187: Epicurus and Epicureans (Greek philosophy)
      • 188: Stoics ; or, Stoicism
      • 189: Early Christian philosophy and Philosophy, Medieval
    • 190: Philosophy, Modern and Modern philosophy
      • 191: Philosophy, American
      • 192: Philosophy, British
      • 193: Philosophy, German
      • 194: Philosophy, French
      • 195: Philosophy, Italian
      • 196: Philosophy, Spanish
      • 197: Philosophy, Russian and Slavic philosophy
      • 198: Scandinavian philosophy
      • 199: Other modern philosophers
  • 200: Religion ; or, Religion and theology
      • 201: Religion — Philosophy ; or, Philosophy of religion
      • 202: Religious compendia and Religious outlines and Religious systems
      • 203: Religion — Dictionaries and Religion encyclopedias
      • 204: Religious essays, lectures, disputations, addresses
      • 205: Religion — Periodicals
      • 206: Religion societies, transactions, reports, etc.
      • 207: Religious education and Theological seminaries
      • 208: Religion collections
      • 209: Religion — History
    • 210: Natural theology and Secularism
      • 211: Deism and Atheism
      • 212: Pantheism and Theosophy
      • 213: Creation and Evolution — Religious aspects
      • 214: Providence and government of God and Theodicy and Fate and fatalism
      • 215: Religion and science
      • 218: Future life and Immortality and Eternity (from Christian perspectives)
    • 220: Bible
      • 221-224: Bible. O.T. ; or, Old Testament
      • 222: Bible. O.T. Historical Books ; or, Historical books of the Old Testament
      • 223: Poetical books of the Old Testament
      • 224: Bible. O.T. Prophets ; or, Prophetic books of the Old Testament
      • 225-228: Bible. N.T. ; or, New Testament
      • 226: (Bible. N.T. Gospels and Bible. N.T. Acts) ; or, Gospels and Acts
      • 227: Bible. N.T. Epistles ; or, Epistles (New Testament)
      • 228: Bible. N.T. Revelation ; or, Book of Revelation
      • 229: Bible. O.T. Apocrypha and Apocryphal books
    • 230: Theology, Doctrinal ; or, Doctrinal theology
      • 231: God
      • 232: Jesus Christ
      • 233: Theological anthropology
      • 234: Salvation
      • 235: Angels and Devil and Demonology and Saints
      • 236: Eschatology
      • 238: Creeds and Catechisms and Covenant theology
      • 239: Apologetics
    • 240: Devotional literature and Theology, Practical
      • 241: Christian ethics
      • 242: Meditations and Contemplation
      • 243: Conversion and Evangelistic work
      • 246-247: Christian art and symbolism
      • 247: Religious articles
      • 248: Christian life
      • 249: Families — Religious life
    • 250: Pastoral theology
      • 251: Preaching
      • 252: Sermons
      • 253: Evangelistic work and Clergy
      • 254: Church management
      • 255: Monasticism and religious orders
      • 259: Other ministries and church work
    • 260: Church and Church work
      • 261: Church and the world
      • 262: Church polity
      • 263: Sabbath and Sunday and Christian pilgrims and pilgrimages and Church year
      • 264: Public worship
      • 265: Sacraments
      • 266: Missions and Home missions
      • 267: Christian associations`
      • 268: Christian education
      • 269: Revivals and Spiritual retreats and Parish missions
    • 270: Church history ; or, History of Christianity
      • 271: Monasticism and religious orders
      • 272: Persecution
      • 273: Christian heresies
      • 274: Europe — Church history and Christianity — Europe
      • 275: Asia — Church history and Christiantiy — Asia
      • 276: Africa — Church history and Christianity — Africa
      • 277: North America — Church history and Christianity — North America
      • 278: South America — Church history and Christianity — South America
      • 279: Oceania — Church history and Christianity — Oceania
    • 280: Christian sects
      • 281: Church history–Primitive and early church, ca. 30-600 and Eastern churches
      • 282: Catholic Church
      • 283: Anglican Communion
      • 284: Protestant churches and Protestantism
      • 285: Reformed Church and Presbyterian Church and Congregational churches
      • 286: Baptists
      • 287: Methodism
      • 289: Other Christian sects
    • 290: Religions ; or, Non-Christian religions and comparative religion
      • 291: Mythology
      • 292: Mythology, Classical
      • 293: Mythology, Germanic and Northern European mythology and religion
      • 294: Hinduism and Brahmanism and Buddhism and Sikhism
      • 295: Zoroastrianism
      • 296: Judaism
      • 297: Islam and Bahai Faith
      • 299: Other religions
  • 300: Social sciences
      • 301: Sociology
      • 302: Social psychology
      • 303: Social sciences — Dictionaries and Social science encyclopedias
      • 304: Social science essays, lectures, addresses
        • 304.2: Human ecology
        • 304.5: Sociobiology
        • 304.6: Population
        • 304.8: (Emigration and immigration and Migration, Internal) from demographic perspectives ; or, Migrations
      • 305: Social sciences — Periodicals
      • 306: Culture
      • 307: Social sciences — Research and Social sciences — Study and teaching and Cities and towns
    • 310: Statistics
      • 314: Europe — Statistics
      • 315: Asia — Statistics
      • 316: Africa — Statistics
      • 317: North America — Statistics and America — Statistics
      • 318: South America — Statistics and Latin America — Statistics
      • 319: Oceania — Statistics and Polar regions — Statistics
    • 320: Political science
      • 321: Political science — Philosophy and Forms of government
      • 322: Religion and state and Church and state
      • 323: Human rights and Ethnic relations and Race relations and Minorities
      • 324: Elections and Suffrage and Political parties
      • 325: Colonies and Emigration and immigration from political perspectives
      • 326: Slavery and African Americans
      • 327: International relations and World politics
      • 328: Legislative bodies
    • 330: Economics
      • 331: Labor and Capital
      • 332: Finance
      • 333: Land use
      • 334: Cooperation
      • 335: Socialism and Communism
      • 336: Finance, Public
      • 337: International economic relations
      • 338: Industries and Prices and Microeconomics
      • 339: Macroeconomics and Poor (from economic perspectives) and Consumption (Economics) and Consumers
    • 340: Law
      • 341: International law
      • 342: Constitutional law and Comparative government
      • 343: Criminal law
      • 344: Martial law
      • 345: Law — United States
      • 346: Law — Great Britain
      • 347: Common law ; or, Anglo-American legal tradition
      • 348: Canon law and Ecclesiastical law
      • 349: Law in other jurisdictions
    • 350: Public administration and Military art and science
      • 351: Public administration (for central government)
      • 352: Local government
      • 353: United States — Politics and government and State governments
      • 354: Non-US governments
      • 355-358: Military art and science
      • 356: Infantry
      • 357: Cavalry
      • 358: Weapons and Armor (regimental) and Air power and Military engineers
      • 359: Naval art and science and Sea-power
    • 360: Social service and Societies
      • 361: Charity
      • 362: Hospitals and Asylums and Human services
        • 362.1: Hospitals
        • 362.2: Mentally ill
        • 362.3: People with mental disabilities
        • 362.4: People with disabilities and Blind and Deaf
        • 362.5: Poor (from social service perspectives)
        • 362.6: Older people — Care
        • 362.7: Child welfare
        • 362.8: Other human services
        • 362.9: Social service in particular countries and regions
      • 363: Political activists
        • 363.1: Risk and Accidents
        • 363.2: Police
          • 363.31: Censorship
          • 363.32: Terrorism
          • 363.33: Gun control
          • 363.34: Disasters
          • 363.35: Civil defense
          • 363.37: Fire departments and Fire prevention
          • 363.41: Prohibition and Temperance (as a political movement)
          • 363.42: Gambling — Law and legislation
          • 363.45: Drug control
          • 363.46: Abortion — Government policy
          • 363.47: Pornography
        • 363.5: Housing
        • 363.6: Public utilities
        • 363.7: Environmental protection
            • 363.728: Refuse and refuse disposal
          • 363.73: Pollution
              • 363.7386: Acid rain
        • 363.8: Food supply
        • 363.9: Birth control and Overpopulation and Eugenics
      • 364: Criminology
      • 365: Correctional institutions
      • 366: Secret societies
      • 367: Clubs
      • 368: Insurance
      • 369: Other associations and institutions
    • 370: Education
      • 371: Teachers and Teaching and School management and organization
      • 372: Education, Elementary and Kindergarten
      • 373: Education, Secondary and High schools
      • 374: Adult education and Continuing education
      • 375: Education — Curricula
      • 378: Education, Higher and Universities and colleges
      • 379: Education and state and Public schools
    • 380: Commerce and Communication and traffic
      • 381: Commerce
      • 382: International trade
      • 383: Postal service
      • 384: Telecommunication
        • 384.1: Telegraph
        • 384.3: Internet
        • 384.4: Cables, Submarine
        • 384.5: Broadcasting ; or, Radio and television
        • 384.6: Telephone
        • 384.8: Motion picture industry
      • 385: Railroads (from usage perspectives)
      • 386: Waterways
      • 387: Shipping
      • 388: Local transit
      • 389: Weights and measures and Metrology
    • 390: Ethnology ; or, Customs and folklore
      • 391: Costume and Cosmetics and Fashion
      • 392: Families and Courtship and Marriage and Sex
      • 393: Death — Social aspects and Funeral rites and ceremonies
      • 394: Manners and customs
      • 395: Etiquette
      • 398: Folklore
      • 399: Weapons and Armor (personal)
  • 400: (Philology and Language and languages) ; or, Languages and linguistics
      • 401: Language and languages — Philosophy and Language and languages — Origin
      • 402: Language outlines and compendia and Language and languages — Vocational guidance
      • 403: Language and languages — Dictionaries and Linguistics — Dictionaries and Language and linguistics encyclopedias
      • 404: Essay collections on languages and linguistics
      • 405: Language and languages — Periodicals
      • 406: Language and linguistic societies, transactions, reports, etc.
      • 407: Language and languages — Study and teaching
      • 408: Linguistics collections and Languages, Artificial
      • 409: Historical linguistics and Languages in particular countries and regions
    • 410: Linguistics
      • 411: Writing and Alphabet
      • 412: Semantics and Etymology
      • 413: Language and languages — Dictionaries and Lexicography
      • 414: Phonology and Phonetics and Deaf — Means of communication
      • 415: Grammar, Comparative and general
      • 417: Paleography and Inscriptions
      • 418: Language acquisition and Applied linguistics
      • 419: Sign language
    • 420: English language
      • 421: English language — Orthography and spelling and English language — Phonetics
      • 422: English language — Semantics and English language — Etymology
      • 423: English language — Dictionaries and English language — Lexicography
      • 425: English language — Grammar
      • 427: English language — Dialects and English language — Slang and English language — Jargon and English language — Middle English, 1100-1500
      • 428: English language — Study and teaching and English language — Usage
      • 429: English language — Old English, ca. 450-1100
    • 430: German language and Germanic languages
      • 431: German language — Orthography and spelling and German language — Phonetics
      • 432: German language — Semantics and German language — Etymology
      • 433: German language — Dictionaries and German language — Lexicography
      • 435: German language — Grammar
      • 437: German language — Dialects and German language — Slang and German language — Jargon
      • 438: German language — Study and teaching and German language — Usage
      • 439: Other Germanic, non-English languages
    • 440: French language
      • 441: French language — Orthography and spelling and French language — Phonetics
      • 442: French language — Semantics and French language — Etymology
      • 443: French language — Dictionaries and French language — Lexicography
      • 445: French language — Grammar
      • 447: French language — Dialects and French language — Slang and French language — Jargon and French language — To 1300
      • 448: French language — Study and teaching and French language — Usage
      • 449: Catalan language and Provençal language
    • 450: Italian language and Romanian language
      • 451: Italian language — Orthography and spelling and Italian language — Phonetics
      • 452: Italian language — Semantics and Italian language — Etymology
      • 453: Italian language — Dictionaries and Italian language — Lexicography
      • 455: Italian language — Grammar
      • 457: Italian language — Dialects and Italian language — Slang
      • 458: Italian language — Study and teaching and Italian language — Usage
      • 459: Romanian language
    • 460: Spanish language and Portuguese language
      • 461: Spanish language — Orthography and spelling and Spanish language — Phonetics
      • 462: Spanish language — Semantics and Spanish language — Etymology
      • 463: Spanish language — Dictionaries and Spanish language — Lexicography
      • 465: Spanish language — Grammar
      • 467: Spanish language — Dialects and Spanish language — Slang
      • 468: Spanish language — Study and teaching and Spanish language — Usage
      • 469: Portuguese language
    • 470: Latin language and Latin philology
      • 471: Latin language — Orthography and spelling and Latin language — Pronunciation
      • 472: Latin language — Semantics and Latin language — Etymology
      • 473: Latin language — Dictionaries and Latin language — Lexicography
      • 475: Latin language — Grammar
      • 477: Latin language — Dialects and Latin language, Medieval and modern
      • 478: Latin language — Study and teaching and Latin language — Usage
      • 479: Romance languages
    • 480: Greek language and Greek philology
      • 481: Greek language — Alphabet and Greek language — Pronunciation
      • 482: Greek language — Semantics and Greek language — Etymology
      • 483: Greek language — Dictionaries and Greek language — Lexicography
      • 485: Greek language — Grammar
      • 487: Greek language — Dialects and Greek language, Biblical
      • 488: Greek language — Study and teaching
      • 489: Greek language, Modern
    • 490: Other languages
      • 491: Indo-European languages
      • 492: Semitic languages
      • 493: Hamitic languages
      • 494: Altaic languages and Uralic languages
      • 495: East Asian languages
      • 496: African languages
      • 497: Indians of North America — Languages
      • 498: Indians of South America — Languages
      • 499: Austronesian languages and Languages, Artificial and minor languages
  • 500: Science and Natural history
      • 501: Science — Philosophy ; or, Philosophy of science
      • 502: Science outlines and introductions and Science — Vocational guidance
      • 503: Science — Dictionaries and Science — Encyclopedias
      • 505: Science — Periodicals
      • 506: Science — Societies, etc.
      • 507: Research (scientific) and Science — Study and teaching
      • 508: Collections of scientific essays and papers
      • 509: Science — History and Science in particular countries and regions
    • 510: Mathematics
      • 511: Arithmetic
      • 512: Algebra
      • 513: Geometry
      • 514: Trigonometry and Topology
      • 515: Calculus and Mathematical analysis
      • 516: Geometry, Algebraic
      • 518: Numerical analysis
      • 519: (Probabilities and Mathematical statistics) ; or, Probability and statistics
    • 520: Astronomy
      • 521: Theoretical astronomy and Celestial mechanics
      • 522: Spherical astronomy and Astronomy — Observations
      • 523: Descriptive astronomy and The universe and heavenly bodies
      • 525: Earth
      • 526: Geodesy
      • 527: Navigation
      • 528: Ephemerides and Nautical almanacs
      • 529: Chronology
    • 530: Physics
      • 531: Mechanics
      • 532: Fluid mechanics
      • 533: Gas dynamics and Aerodynamics and Pneumatics
      • 534: Sound
      • 535: Optics and Light
      • 536: Heat and Thermodynamics
      • 537: Electricity
      • 538: Magnetism
      • 539: Nuclear physics and Matter
    • 540: Chemistry
      • 541: Chemistry, Physical and theoretical ; or, Physical chemistry and Theoretical chemistry
      • 542: Chemical laboratories
      • 543: Chemistry, Analytic
      • 546: Chemistry, Inorganic
      • 547: Chemistry, Organic
      • 548: Crystallography
      • 549: Mineralogy
    • 550: Geology and Earth sciences
      • 551: Physical geology and Geodynamics
      • 552: Petrology and Rocks and Minerals
      • 553: Geology, Economic
      • 554: Geology — Europe
      • 555: Geology — Asia
      • 556: Geology — Africa
      • 557: Geology — North America
      • 558: Geology — South America
      • 559: Geology of Oceania, polar, and extraterrestrial regions
        • 559.4: Geology — Australia
        • 559.9: Astrogeology
    • 560: Paleontology
      • 561: Paleobotany
      • 562-565: Invertebrates, Fossil
      • 563: Protozoa, Fossil
      • 564: Mollusks, Fossil
      • 565: Arthropoda, Fossil
      • 566-569: Vertebrates, Fossil
      • 567: Fishes, Fossil and Amphibians, Fossil and Reptiles, Fossil
        • 567.9: Dinosaurs
      • 568: Birds, Fossil
      • 569: Mammals, Fossil
    • 570: Biology and Anthropology
      • 571: Prehistoric peoples
      • 572: Anthropology
      • 573: Physical anthropology and Human evolution and Human beings — Origin
      • 575: Evolution (Biology) and Genetics
      • 576: Microbiology
      • 577: Life (Biology)
      • 578: Microscopy
      • 579: Biological specimens
    • 580: Botany
      • 581: Plant physiology and Plant anatomy
      • 582: Phanerogams and Trees
      • 583: Dicotyledons
      • 584: Monocotyledons
      • 585: Gymnosperms
      • 586-589: Cryptogams
      • 587: Pteridophyta
      • 588: Bryophytes
    • 590: Zoology
      • 591: Animal physiology
      • 592-595: Invertebrates
      • 593: Protozoa
      • 594: Mollusks
      • 595: Arthropoda and Worms
      • 596-599: Vertebrates
      • 597: Fishes and Amphibians and Reptiles
      • 598: Birds
      • 599: Mammals
  • 600: Industrial arts and Technology and Engineering ; or, Applied sciences and technology
      • 601: Technology — Philosophy ; or, Philosophy of technology
      • 602: Formulas, recipes, etc. ; or, Technological recipes
      • 603: Technology — Dictionaries and Technology — Encyclopedias and Industrial arts — Dictionaries and Engineering — Dictionaries
      • 604: Essay collections on technology, engineering, and industrial arts
      • 605: Technology — Periodicals and Industrial arts — Periodicals and Engineering — Periodicals
      • 606: Technology — Societies, etc. and Engineering — Societies, etc. and Industrial arts — Societies, etc.
      • 607: Technical education and Industrial arts — Study and teaching and Engineering — Study and teaching and Research, Industrial
      • 608: Inventions and Patents
      • 609: Technology — History and Industrial arts — History
    • 610: Medicine
      • 611: Anatomy
      • 612: Physiology
        • 612.1: Cardiovascular system
        • 612.2: Respiration
        • 612.3: Digestion
        • 612.4: Glands
        • 612.5: Animal heat
        • 612.6: Reproduction
        • 612.7: Musculoskeletal system and Larynx and Skin
        • 612.8: Nervous system
          • 612.81: Nerves, Peripheral
          • 612.82: Central nervous system and Brain
          • 612.84: Vision
          • 612.85: Hearing
          • 612.86: Smell
          • 612.87: Taste
          • 612.88: Touch
        • 612.9: Other parts of the body
      • 613: Health and Hygiene
      • 614: Public health
      • 615: Materia medica and Drugs and Pharmacy
        • 615.8: Medicine, Physical
          • 615.84: Radiology, Medical
          • 615.85: Mental healing
          • 615.88: Patent medicines
          • 615.88: Traditional medicine
            • 615.892: Acupuncture
      • 616: Pathology and Diseases and Treatment
      • 617: Surgery and Dentistry
      • 618: Women — Health and hygiene and Children — Health and hygiene and Gynecology and Pediatrics
    • 620: Engineering
      • 621: Mechanical engineering and Machinery
        • 621.1: Steam engineering
        • 621.2: Hydraulic machinery
        • 621.3: Electrical engineering
        • 621.4: Heat engineering
        • 621.5: Pneumatic machinery and Compressed air and Refrigeration and refrigerating machinery
        • 621.6: Fans (Machinery) and Pumping machinery
        • 621.7: Production engineering and Factories and Machine-shop practice
        • 621.8: Other mechanical engineering topics
        • 621.9: Machine-tools
      • 622: Mining engineering and Mines and mineral resources
      • 623: Military engineering and Marine engineering
      • 624: Bridges and Roofs and Civil engineering
      • 625: Railroads (from engineering perspectives) and Roads
      • 627: Hydraulic engineering and Ocean engineering and Rivers and Harbors
      • 628: Sanitary engineering and Sanitation and Water-supply
      • 629: Other branches of engineering
    • 630: Agriculture
      • 631: Farms and Soils and Agricultural machinery and Plants — Nutrition and Water in agriculture
      • 632: Agricultural hindrances (blight, disease, weeds, pests)
      • 633: Field crops
      • 634: Tree crops and Fruit and Nuts and Vineyards and Orchards and Forests and forestry (in agricultural applications)
      • 635: Gardening (for food)
      • 636: Domestic animals and Pets
      • 637: Dairying
      • 638: Bee culture and Sericulture
      • 639: Hunting (for food) and Fishing (for food) and Trapping and Fish culture
    • 640: Home economics
      • 641: Cooking and Gastronomy
      • 642: Entertaining
      • 643: Dwellings
      • 644: Dwellings — Heating and ventilation and Dwellings — Energy conservation and Dwellings — Lighting
      • 645: House furnishings
      • 646: Clothing and dress and Fashion and Beauty, Personal
      • 647: Household employees and Caterers and catering and Real estate management
      • 648: Sanitation, Household
      • 649: Child rearing and Parenting
    • 650: Business
      • 651: Office management
      • 652: Business communication and Typewriting and Copying processes and Word processing
      • 653: Shorthand and Dictation (Office practice)
      • 657: Accounting and Bookkeeping
      • 658: Management
      • 659: Industrial publicity and Marketing and other business topics
    • 660: Chemistry, Technical and Chemical engineering
      • 661: Chemicals
      • 662: Explosives and Fuel
      • 663: Beverages
      • 664: Food
      • 665: Petroleum and Oils and fats and Natural gas and Gas manufacture and works
      • 666: Ceramics and Clay and Cement
      • 652: Business communication and Typewriting and Copying processes and Word processing
      • 653: Shorthand and Dictation (Office practice)
      • 657: Accounting and Bookkeeping
      • 658: Management
      • 659: Industrial publicity and Marketing and other business topics
    • 660: Chemistry, Technical and Chemical engineering
      • 661: Chemicals
      • 662: Explosives and Fuel
      • 663: Beverages
      • 664: Food
      • 665: Petroleum and Oils and fats and Natural gas and Gas manufacture and works
      • 666: Ceramics and Clay and Cement
      • 667: Pigments and Paint and Cleaning and Textile printing
      • 668: Polymers and Plastics and other organic chemicals
      • 669: Metallurgy and Assaying
    • 670: Manufactures ; or, Manufacturing
      • 671-673: Metal-work
      • 672: Ironwork and Steelwork
      • 673: Brass and Bronze
      • 674: Forest products
      • 675: Leather
      • 676: Paper and Paper products
      • 677: Textile fabrics
      • 678: Rubber
      • 679: Other manufactured goods
    • 680: Handicraft and Occupations
      • 681: Clocks and watches and Scientific apparatus and instruments
      • 682: Blacksmithing
      • 683: Firearms and Locksmithing
      • 684: Woodwork and Furniture (utilitarian)
      • 685: Footwear and Leather industry and trade and Luggage
      • 686: Bookbinding and Printing
      • 687: Clothing trade
      • 688: Toys and Costume jewelry and Carriages and carts and Packaging
      • 689: Basket making
    • 690: Building
      • 691: Building materials and Building process and Building preservation
      • 692: Architecture — Designs and plans and Buildings — Specifications
      • 693: Masonry and Building, Fireproof and Weatherproofing and Acoustical engineering and Special building techniques
      • 694: Carpentry
      • 695: Roofing
      • 696: Plumbing and Pipe fitting
      • 697: Heating and Ventilation and Air conditioning
      • 698: Painting, Industrial and House painting and Paperhanging
      • 699: Railroad cars
  • 700: Arts ; or, Arts and recreation
      • 701: Art — Philosophy and Aesthetics
      • 702: Art appreciation and Art — Vocational guidance Art surveys and introductions
      • 703: Art — Dictionaries and Art encyclopedias
      • 704: Essays, lectures, addresses in the arts
      • 705: Art — Periodicals
      • 706: Art — Societies, etc.
      • 707: Art — Study and teaching
      • 708: Art museums
      • 709: Art — History
    • 710: Gardening (ornamental) and Parks and Forests and forestry (in conservation applications)
      • 711: City planning and Regional planning
      • 712: Gardens and Landscape architecture
      • 713: Scenic byways and Garden walks
      • 714: Water in landscape architecture
      • 715: Shrubs and Ornamental trees
      • 716: Gardening (ornamental)
      • 717: Garden ornaments and furniture
      • 718: Sepulchral monuments
      • 719: Cemeteries
    • 720: Architecture
      • 721: Architectural design
      • 722: Architecture, Ancient and Architecture, Oriental
      • 723: Architecture, Medieval and Architecture, Byzantine and Islamic architecture and Architecture, Gothic
      • 724: Architecture, Modern
      • 725: Public architecture
      • 726: Religious architecture
      • 727: (School buildings and Museum architecture); or, Educational and research architecture
      • 728: Architecture, Domestic
      • 729: Decoration and ornament
    • 730: Sculpture
      • 731: Sculpture materials and Sculpture — Technique and Methods of sculpture
      • 732-733: Sculpture, Primitive and Sculpture, Ancient and Sculpture, Asian and Sculpture, African
      • 733: Sculpture, Classical
      • 734: Sculpture, Medieval
      • 735: Sculpture, Modern
      • 736: Carving (Decorative arts) and Gems and Glyptics
      • 737: Numismatics ; or, Coins and medals
      • 738: Pottery
      • 739: Art metal-work
    • 740: Drawing and Decoration and ornament and Design
      • 741: Drawing — Technique and Caricatures and cartoons and Specific drawing techniques
      • 742: Perspective
      • 743: Anatomy, Artistic and Figure drawing and Nude in art and Animals in art
      • 744: Mechanical drawing and Geometrical drawing
      • 745: Decorative arts
      • 746: Needlework and Fancy work
      • 747: Interior decoration
      • 748: Glassware and Glass art
      • 749: Artistic furniture
    • 750: Painting and Art
      • 751: Painting — Technique and Artists’ materials and Methods of painting
      • 752: Color in art
      • 753: Epic, mythic, and idealistic painting
      • 754: Genre painting
      • 755: Religious art and Religious painting
      • 756: Painting of historical or milirary scenes
      • 757: Portraits
      • 758: Landscape painting and Marine painting and Still-life painting
      • 759: Painting of specific regions and artists and Schools pf painting
    • 760: Engraving and Graphic arts
      • 761: Wood-engraving and Relief printing
      • 762: Cooper and steel engraving
      • 763: Lithography
      • 764: Chromolithography and Serigraphy
      • 765: Line engraving and Stipple engraving
      • 766: Mezzotint engraving and Aquatint
      • 767: Etchers and Etching
      • 768: Machine engraving
      • 769: Printers and Engravers and Collections of engravings and printing
    • 770: Photography
      • 771: Photography — Equipment and supplies and Photography technique
      • 772: Color photography and Photography — Printing processes
      • 773: Photography — Printing processes — Oil
      • 774: Holography
      • 775: Photography — Digital techniques
      • 776: Digital art
      • 777: Photoengraving
      • 778: Photographic applications and Cinematography
      • 779: Photographers and Photographs
    • 780: Music
      • 781: Music theory
      • 782: Dramatic music
      • 783: Sacred music
      • 784: Vocal music and Popular music
      • 785: Orchestra ; or, Orchestral music
      • 786: Keyboard instruments
      • 787: Stringed instruments
      • 788: Wind instruments
    • 790: Amusements and Recreation
      • 791: Public entertainment
      • 792: Theater
      • 793-795: Games and Indoor amusements
      • 794: Games of skill
      • 795: Card games and Games of chance
      • 796: Sports and Athletics
      • 797: Boats and boating and Aquatic sports and Aeronautical sports
      • 798: Horsemanship and Horse sports and Dog sports
      • 799: Hunting (for sport) and Fishing (for sport) and Shooting
  • 800: Literature
      • 801: Literature — Philosophy and Literature — Aesthetics
      • 802: Literary compendia and outlines
      • 803: Literature — Dictionaries and Literary encyclopedias
      • 805: Literature — Periodicals
      • 806: Literature — Societies, etc.
      • 807: Literature — Research and Literature — Study and teaching
      • 808: Rhetoric and Style, Literary
      • 809: Specific topics in literature
    • 810: American literature
      • 811: American poetry
      • 812: American drama
      • 813: American fiction
      • 814: American essays
      • 815: Speeches, addresses, etc., American
      • 816: American letters
      • 817: American wit and humor
      • 818: Authors, American and American miscellany
    • 820: English literature
      • 821: English poetry
      • 822: English drama
      • 823: English fiction
      • 824: English essays
      • 825: Speeches, addresses, etc., English
      • 826: English letters
      • 827: English wit and humor
      • 828: Authors, English and English miscellany
      • 829: English literature — Old English, ca. 450-1100
    • 830: German literature
      • 831: German poetry
      • 832: German drama
      • 833: German fiction
      • 834: German essays
      • 835: Speeches, addresses, etc., German
      • 836: German letters
      • 837: German wit and humor
      • 838: Authors, German and German miscellany
      • 839: Literature in other Germanic languages
    • 840: French literature
      • 841: French poetry
      • 842: French drama
      • 843: French fiction
      • 844: French essays
      • 845: Speeches, addresses, etc., French
      • 846: French letters
      • 847: French wit and humor
      • 848: Authors, French and French miscellany
      • 849: Provençal literature and Catalan literature
    • 850: Italian literature and Romanian literature
      • 851: Italian poetry
      • 852: Italian drama
      • 853: Italian fiction
      • 854: Italian essays
      • 855: Speeches, addresses, etc., Italian
      • 856: Italian letters
      • 857: Italian wit and humor
      • 858: Authors, Italian and Italian miscellany
      • 859: Romanian literature
    • 860: Spanish literature
      • 861: Spanish poetry
      • 862: Spanish drama
      • 863: Spanish fiction
      • 864: Spanish essays
      • 855: Speeches, addresses, etc., Spanish
      • 866: Spanish letters
      • 857: Spanish wit and humor
      • 868: Authors, Spanish and Spanish miscellany
      • 869: Portuguese literature
    • 870: Latin literature
      • 871: Latin poetry
      • 872: Latin drama
      • 873: Epic poetry, Latin
      • 874: Latin lyric poetry
      • 875: Speeches, addresses, etc., Latin.
      • 876: Latin letters
      • 877: Latin wit and humor
      • 878: Authors, Latin and Latin miscellany
      • 879: Latin literature, Medieval and modern
    • 880: Greek literature and Classical literature
      • 881: Greek poetry and Classical poetry
      • 882: Greek drama and Classical drama
      • 883: Epic poetry, Greek and Epic poetry, classical
      • 884: Greek and classical lyric poetry
      • 885: Speeches, addresses, etc., Greek and Classical speeches
      • 886: Greek letters and Classical letters
      • 887: Greek wit and humor and Classical wit and humor
      • 888: Authors, Greek and Authors, Classical and Greek and classical miscellany
      • 889: Greek literature, Modern
    • 890: Literature of other languages
      • 891: Literature of other Indo-European languages
      • 892: Semitic literature
      • 893: Literature of Hamitic languages
      • 894: Altaic literature and Uralic literature
      • 895: East Asian literature
      • 896: African literature
      • 897: Indian literature from North America
      • 898: Indian literature from South America
      • 899: Austronesian literature and other literatures
  • 900: History and Geography
      • 901: Civilization and History — Philosophy ; or, Philosophy of history
      • 902: Chronology, Historical
      • 903: History — Dictionaries and Historical encyclopedias
      • 904: Historical essays, lectures, addresses
      • 905: History — Periodicals
      • 906: History — Societies, etc.
      • 907: History — Study and teaching
      • 908: Historical collections and miscellanea
      • 909: Universal and general modern histories
    • 910: Geography and Voyages and travels
      • 911: Historical geography
      • 912: Maps and Atlases
      • 913: Antiquities and Archaeology
      • 914: Europe — Description and travel
      • 915: Asia — Description and travel
      • 916: Africa — Description and travel
      • 917: America — Description and travel and North America — Description and travel
      • 918: Latin America — Description and travel and South America — Description and travel
      • 919: Oceania — Description and travel and Polar regions — Discovery and exploration
    • 920: Biography
    • 930: History, Ancient ; or, Ancient history
      • 931: (China — History — To 221 B.C. and China — History — 221 B.C.-960 A.D. ) ; or, Ancient China
      • 932: Egypt — History — To 640 A.D. ; or, Ancient Egypt
      • 933: (Palestine — History — To 70 A.D. and Jews — History — To 70 A.D.) ; or, Ancient Judea
      • 934: (India — History — To 324 B.C. and India — History — 324 B.C.-1000 A.D.) ; or, Ancient India
      • 935: Iraq — History — To 634 and Iran — History — To 640
      • 936: Europe — History — To 476
      • 937: Rome ; or, Ancient Rome
      • 938: (Greece — History — To 146 B.C. and Greece — History — 146 B.C.-323 A.D.) ; or, Ancient Greece
      • 939: Ancient history in other areas
    • 940-990: History, Modern ; or, Modern history
    • 940: Europe
      • 941: Scotland and Ireland
      • 942: England and Great Britain
      • 943: Germany and Europe, Central
      • 944: France
      • 945: Italy
      • 946: Spain and Portugal
      • 947: Russia and Finland and Europe, Eastern
      • 948: Scandinavia
      • 949: Smaller European countries
        • 949.1: Iceland
        • 949.2: Netherlands
        • 949.3: Belgium
        • 949.4: Switzerland
        • 949.5: Greece and Byzantine Empire
        • 949.6: Turkey and Balkan Peninsula
        • 949.7: Bulgaria and Former Yugoslavia countries
        • 949.8: Romania
        • 949.9: Aegean Islands (Greece and Turkey) and Crete (Greece)
    • 950: Asia
      • 951: China and Korea
      • 952: Japan
      • 953: Arabian Peninsula
      • 954: India and Pakistan and Bangladesh
      • 955: Iran
      • 956: Middle East
      • 957-958: Asia, Central
      • 957: Siberia (Russia)
      • 958: Afghanistan
      • 959: Southeast Asia
    • 960: Africa
      • 961: Africa, North ; or, North Africa
        • 961.1: Tunisia
        • 961.2: Libya
      • 962: Egypt and Sudan
        • 962.4-962.9: Sudan
      • 963: Ethiopia and Eritrea
        • 963.5: Eritrea
      • 964: Morocco and Western Sahara
        • 964.8: Western Sahara
      • 965: Algeria
      • 966: Africa, West ; or, West Africa
      • 967: Africa, Sub-Saharan ; or, Sub-Saharan Africa
      • 968: South Africa and Africa, Southern
      • 969: Madagascar and Islands of the Indian Ocean
    • 970: America and North America
      • 971: Canada
        • 971.1: British Columbia
        • 971.2: Northwest, Canadian
          • 971.23: Alberta
          • 971.24: Saskatchewan
          • 971.27: Manitoba
        • 971.3: Ontario
        • 971.4: Québec (Province)
        • 971.5: New Brunswick and Atlantic Provinces
        • 971.6: Nova Scotia and Acadia
        • 971.7: Prince Edward Island
        • 971.8: Newfoundland and Labrador
        • 971.9: Canada, Northern
      • 972: Mexico and Central America
      • 973-979: United States
      • 974: New England and Middle Atlantic States
        • 974.1: Maine
        • 974.2: New Hampshire
        • 974.3: Vermont
        • 974.4: Massachusetts
        • 974.5: Rhode Island
        • 974.6: Connecticut
        • 974.7: New York (State)
        • 974.8: Pennsylvania
        • 974.9: New Jersey
      • 975: South Atlantic States and Middle Atlantic States and West Virginia
        • 975.1: Delaware
        • 975.2: Maryland
        • 975.3: Washington (D.C.)
        • 975.4: West Virginia
        • 975.5: Virginia
        • 975.6: North Carolina
        • 975.7: South Carolina
        • 975.8: Georgia
        • 975.9: Florida
      • 975: Gulf States and Southwest, Old
        • 976.1: Alabama
        • 976.2: Mississippi
        • 976.3: Louisiana
        • 976.4: Texas
        • 976.6: Oklahoma
        • 976.7: Arkansas
        • 976.8: Tennessee
        • 976.9: Kentucky
      • 977: Middle West
        • 977.1: Ohio
        • 977.2: Indiana
        • 977.3: Illinois
        • 977.4: Michigan
        • 977.5: Wisconsin
        • 977.6: Minnesota
        • 977.7: Iowa
        • 977.8: Missouri
      • 978: West (U.S.) ; or, Great plains and mountain west
        • 978.1: Kansas
        • 978.2: Nebraska
        • 978.3: South Dakota
        • 978.4: North Dakota
        • 978.6: Montana
        • 978.7: Wyoming
        • 978.8: Colorado
        • 978.9: New Mexico
      • 979: Pacific States ; or, Far western states
        • 979.1: Arizona
        • 979.2: Utah
        • 979.3: Nevada
        • 979.4: California
        • 979.5: Oregon
        • 979.6: Idaho
        • 979.7: Washington (State)
        • 979.8: Alaska
    • 980: South America and Latin America
      • 981: Brazil
      • 982: Argentina
      • 983: Chile
      • 984: Bolivia
      • 985: Peru
      • 986: Panama and Colombia and Ecuador
      • 987: Venezuela
      • 988: Suriname and Guyana
      • 989: Paraguay and Uruguay
    • 990: Oceania and Polar regions
      • 991-992: Indonesia and Philippines
        • 991.1: Borneo
        • 991.2: Celebes (Indonesia)
        • 991.3: Maluku (Indonesia)
        • 991.4: Philippines
        • 992.1: Sumatra (Indonesia)
        • 992.2: Java (Indonesia)
      • 993-995: Australasia
        • 993.1: New Zealand
        • 993.2-993.3: New Caledonia
        • 993.3: Loyalty Islands (New Caledonia)
        • 993.4: Vanuatu
        • 993.5: Solomon Islands
        • 993.6: New Britain Island (Papua New Guinea) and New Ireland Island (Papua New Guinea)
        • 993.7: Admiralty Islands (Papua New Guinea)
      • 994: Australia
      • 995: New Guinea
      • 996: Polynesia
        • 996.1: Fiji and Tonga and Samoan Islands
        • 996.2: Society Islands (French Polynesia) and Austral Islands (French Polynesia) and Cook Islands
        • 996.3: Marquesas Islands (French Polynesia) and Tuamotu Archipelago (French Polynesia)
        • 996.4: Kiritimati (Kiribati) and Minor Polynesian islands
        • 996.5: Micronesia
        • 996.6: Caroline Islands and Palau
        • 996.7: Mariana Islands and Guam
        • 996.8: Marshall Islands and Kiribati
        • 996.9: Hawaii
      • 997: Isolated islands
      • 998: Polar regions
        • 998.9: Antarctica
      • 999: Outer space

3 Comments »

  1. What a Great idea! Saving to favorites~

    Comment by Cal Phillips — June 6, 2010 @ 10:39 pm | Reply

  2. 660 is doubly given.

    Comment by anton — July 24, 2013 @ 4:28 pm | Reply


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