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Summary of classification
(in 400 divisions)The following outline is not framed in the actual terms used in the tables of any specific edition of the UDC. It is simply a guide to the arrangement of disciplines and subdisciplines, framed in the terms most commonly used to express them.
Common auxiliaries
| Table | 1a | Co-ordination. Addition |
| 1b | Relation. Subgrouping. Order-fixing | |
| 1c | Common auxiliaries of language | |
| 1d | Common auxiliaries of form | |
| 1e | Common auxiliaries of place | |
| 1f | Common auxiliaries of ethnic grouping and nationality | |
| 1g | Common auxiliaries of time | |
| 1h | Specification by non-UDC notation (e.g. 1/9, A/Z) | |
| 1k | Common auxiliaries of properties; Common auxiliaries of materials; Common auxiliaries of relations, processes and operations; Common auxiliaries of persons and personal characteristics |
Main classes
(and some of the disciplines and subdisciplines listed under each)
| 0 | GENERALITIES |
| 00 | PROLEGOMENA. FUNDAMENTALS OF KNOWLEDGE AND CULTURE |
| 004 | Computer science |
| 005 | Management |
| 01 | BIBLIOGRAPHY |
| 02 | LIBRARIANSHIP |
| 030 | ENCYCLOPAEDIAS. GENERAL REFERENCE WORKS |
| 050 | SERIAL PUBLICATIONS. PERIODICALS |
| 06 | ORGANIZATIONS AND ASSOCIATIONS |
| 069 | Museums |
| 070 | NEWSPAPERS. JOURNALISM |
| 08 | POLYGRAPHIES. COLLECTIVE WORKS |
| 09 | MANUSCRIPTS. RARE AND REMARKABLE WORKS |
| 1 | PHILOSOPHY. PSYCHOLOGY |
| 101 | Nature and role of philosophy |
| 11 | Metaphysics |
| 13 | Philosophy of mind and spirit |
| 14 | Philosophical systems |
| 159.9 | PSYCHOLOGY |
| 16 | Logic. Epistemology. Theory of knowledge |
| 17 | Moral philosophy. Ethics |
| 2 | RELIGION. THEOLOGY |
| 21 | PREHISTORIC AND PRIMITIVE RELIGIONS |
| 22 | RELIGIONS OF THE FAR EAST |
| 23 | RELIGIONS OF THE INDIAN SUBCONTINENT. HINDUISM. JAINISM. SIKHISM |
| 24 | BUDDHISM |
| 25 | RELIGIONS OF ANTIQUITY. MINOR CULTS AND RELIGIONS |
| 252 | Religions of Mesopotamia |
| 254 | Religions of Iran |
| 257 | Religions of Europe |
| 26 | JUDAISM |
| 27 | CHRISTIANITY |
| 271 | Eastern church |
| 272/279 | Western Church |
| 272 | Roman Catholic church |
| 274/278 | Protestant churches |
| 28 | ISLAM |
| 282 | Sunnite Islam |
| 284 | Shi'ite Islam |
| 285 | Babi-Baha'i |
| 29 | MODERN SPIRITUAL MOVEMENTS |
| 3 | SOCIAL SCIENCES |
| 304 | Social questions. Social practice. |
| 308 | Sociography. Descriptive studies of society |
| 311 | STATISTICS |
| 314 | DEMOGRAPHY |
| 316 | SOCIOLOGY |
| 32 | POLITICS |
| 321 | Forms of political organization. States as political power |
| 323 | Home affairs. Internal policy |
| 324 | Elections. Plebiscites. Referendums |
| 327 | International relations |
| 328 | Parliaments. Congresses. Representation of the people. Governments |
| 329 | Political parties and movements |
| 33 | ECONOMICS |
| 331 | Labour. Employment. Work. Labour economics. Organization of labour. |
| 336 | Finance |
| 338 | Economic policy. Management of the economy. Production. Services. Prices |
| 339 | Trade. Commerce. International economic relations. World economy |
| 34 | LAW. JURISPRUDENCE |
| 341 | International law |
| 342 | Public law. Constitutional law. Administrative law |
| 343 | Criminal law |
| 343.9 | Criminology |
| 347 | Civil law |
| 35 | PUBLIC ADMINISTRATION. GOVERNMENT |
| 352/354 | Levels of administration. Local, regional, central administration |
| 355/359 | MILITARY SCIENCE |
| 36 | SAFEGUARDING THE MENTAL AND MATERIAL NECESSITIES OF LIFE |
| 364 | SOCIAL WELFARE |
| 368 | Insurance. Communal provision through sharing of risk |
| 37 | EDUCATION |
| 371 | Organization of educational and training system. School organization |
| 374 | Education and training out of school. Further education |
| 378 | Higher education. Universities. Academic study |
| 379.8 | Leisure |
| 39 | ETHNOGRAPHY. FOLKLORE |
| 391 | Costume |
| 392 | Customs, manners, usage in private life |
| 393 | Death. Treatment of corpses. Funerals. Death rites |
| 394 | Public life. Social life. Life of the people |
| 395 | Social ceremonial. Etiquette. Good manners |
| 398 | Folklore in the strict sense. |
| 396 | FEMINISM |
| 5 | MATHEMATICS AND NATURAL SCIENCES |
| 502/504 | Environmental sciences. Conservation of natural resources. Threats to the environment and protection |
| 51 | MATHEMATICS |
| 52 | ASTRONOMY |
| 528 | Geodesy, cartography |
| 529 | Chronology |
| 53 | PHYSICS' |
| 54 | CHEMISTRY' |
| 548 | Crystallography |
| 549 | Mineralogy |
| 55 | EARTH SCIENCES |
| 551.5 | Meteorology. Climatology |
| 551.7 | Stratigraphy |
| 552 | Petrology |
| 553 | Economic geology |
| 556 | Hydrology |
| 56 | PALAEONTOLOGY |
| 57 | BIOLOGICAL SCIENCES |
| 572 | Anthropology |
| 573 | General biology |
| 574 | Ecology |
| 575 | Genetics |
| 576 | Cytology |
| 577 | Biochemistry. Biophysics |
| 578 | Virology |
| 579 | Microbiology |
| 58 | Botany |
| 59 | Zoology |
| 6 | APPLIED SCIENCES. MEDICINE. TECHNOLOGY |
| 60 | Biotechnology |
| 61 | MEDICINE |
| 619 | Veterinary medicine |
| 62 | ENGINEERING. TECHNOLOGY IN GENERAL |
| 621 | Mechanical engineering |
| 621.3 | Electrical engineering |
| 621.38 | Electronics |
| 622 | Mining |
| 623 | Military engineering |
| 624 | Civil engineering |
| 625.1/.5 | Railway engineering |
| 625.7/.8 | Highway engineering |
| 626/627 | Hydraulic engineering |
| 628 | Public health engineering |
| 629 | Vehicle engineering |
| 63 | AGRICULTURAL SCIENCES |
| 630 | Forestry |
| 631/634 | Farm management. Plant husbandry |
| 635 | Horticulture |
| 636/638 | Animal husbandry |
| 639 | Hunting. Fishing |
| 64 | HOME ECONOMICS |
| 641/642 | Cookery |
| 643/649 | Household equipment and management |
| 651 | Office management |
| 654 | Telecommunications |
| 655 | PRINTING. PUBLISHING. BOOK TRADE |
| 656 | TRANSPORT AND POSTAL SERVICES |
| 657 | Accountancy |
| 659 | Publicity. Advertising. Public relations |
| 66 | CHEMICAL TECHNOLOGY |
| 669 | Metallurgy |
| 67/68 | INDUSTRIES, CRAFTS AND TRADES |
| 69 | BUILDING |
| 7 | THE ARTS |
| 71 | REGIONAL PLANNING |
| 72 | ARCHITECTURE |
| 73 | PLASTIC ARTS |
| 74 | DRAWING |
| 745/749 | APPLIED ARTS |
| 75 | PAINTING |
| 76 | GRAPHIC ARTS |
| 77 | PHOTOGRAPHY |
| 78 | MUSIC |
| 79 | RECREATION. ENTERTAINMENT. GAMES. SPORT |
| 791 | CINEMA. FILMS (MOTION PICTURES) |
| 792 | THEATRE |
| 793 | Dance |
| 794 | Board and table games |
| 796/799 | SPORT |
| 8 | LANGUAGE. LINGUISTICS. LITERATURE |
| 80 | PHILOLOGY |
| 81 | LINGUISTICS |
| 811 | Individual languages |
| 82 | LITERATURE |
| 821 | Literature of individual languages |
| 9 | GEOGRAPHY. BIOGRAPHY. HISTORY |
| 902 | ARCHAEOLOGY |
| 903 | Prehistory |
| 904 | Cultural remains of historical times |
| 908 | AREA STUDIES |
| 91 | GEOGRAPHY |
| 929 | BIOGRAPHY |
| 929.5 | Genealogy |
| 929.6 | Heraldry |
| 93/99 | HISTORY |
| 930 | Science of history. Ancillary historical sciences |
| 930.1 | History as a science. Theory and philosophy of history |
| 930.25 | Archivistics. Archives. Public records |
| 930.27 | Epigraphy. Palaeography |
| 94 | GENERAL HISTORY (Subdivision by auxiliaries of place - Table 1e, time - Table 1g and ethnic grouping - Table 1f)) |
| 94(100) | History of the world |
| 94(3) | History of the ancient world |
| 94(4) | History of Europe |
| 94(5) | History of Asia |
| 94(6) | History of Africa |
| 94(7/8) | History of the Americas |
| 94(9) | History of Oceania, the Polar regions, Australasia, etc. |
Last updated: 04
February 2006 
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