Class A: General Works |
| AC |
Collected Works |
| AE |
Encyclopedias |
| AG |
Dictionaries and other general reference works |
| AI |
Indexes |
| AM |
Museums |
| AN |
Newspapers |
| AP |
Periodicals |
| AS |
Academies and learned societies |
| AY |
Yearbooks. Almanacs. Directories |
| AZ |
History of scholarship and learning |
Class B: Philosophy. Psychology. Religion |
| B |
Philosophy (General) |
| BC |
Logic |
| BD |
Speculative Philosophy |
| BF |
Psychology. Parapsychology. Occultism |
| BH |
Aesthetics |
| BJ |
Ethics |
| BL |
Religions. Mythology. Rationalism |
| BM |
Judaism |
| BP |
Islam. Bahaism. Theosophy, etc. |
| BQ |
Buddhism |
| BR |
Christianity |
| BS |
The Bible |
| BT |
Christianity: Doctrinal theology |
| BV |
Christianity: Practical theology |
| BX |
Denominations and Sects |
Class C: Auxiliary Sciences of History |
| C |
Auxiliary sciences of history (General) |
| CB |
History of civilization and culture |
| CC |
Archaeology |
| CD |
Diplomatics. Archives. Seals |
| CE |
Chronology |
| CJ |
Numismatics |
| CN |
Inscriptions. Epigraphy |
| CR |
Heraldry |
| CS |
Genealogy |
| CT |
Biography |
Class D: History (except America) |
| D |
History (General) |
| DA |
Great Britain |
| DB |
Austria. Liechtenstein. Hungary. Czechoslovakia |
| DC |
France |
| DD |
Germany |
| DE |
Mediterranean Region. Greco-Roman World |
| DF |
Greece |
| DG |
Italy. Malta |
| DH |
Netherlands (Low Countries). Belgium. Luxembourg |
| DJ |
Netherlands (Holland) |
| DJK |
Eastern Europe |
| DK |
Russia. Soviet Union. Poland |
| DL |
Northern Europe. Scandinavia |
| DP |
Spain. Portugal |
| DQ |
Switzerland |
| DR |
Balkan Peninsula. Turkey |
| DS |
History of Asia |
| DT |
History of Africa |
| DU |
History of Oceania. Australia. New Zealand |
| DX |
History of Gypsies |
Class E: America (Western Hemisphere) |
| E11 - E143 |
America |
| E151 - E887 |
United States |
| E184.5 - E185.98 |
African-Americans |
| E186 - E199 |
Colonial history, 1607-1775 |
| E201 - E298 |
The Revolution, 1775-1783 |
| E300 - E453 |
Revolution to the Civil War |
| E456 - E655 |
Civil War period, 1861-1865 |
| E660 - E738 |
Late nineteenth century, 1865-1990 |
| E740 - E837.7 |
Twentieth century |
| E838 - E887 |
Later twentieth century, 1961 |
Class F: History - United States (local). Canada.
Central America. South America |
| F1 - F975 |
United States (local history) |
| F1001 - F1140 |
Canada |
| F1201 - F1392 |
Mexico |
| F1401 - 3799 |
Central and South American. Caribbean |
Class G: Geography. Anthropology. Recreation |
| G |
Geography. Atlases. Maps |
| GA |
Mathematical geography. Cartography |
| GB |
Physical geography |
| GC |
Oceanography |
| GE |
Environmental sciences |
| GF |
Human ecology |
| GN |
Anthropology. Ethnology. Ethnography |
| GR |
Folklore |
| GT |
Manners and customs |
| GV |
Sports. Recreation. Games |
Class H: Social Sciences |
| H |
Social Sciences (General) |
| HA |
Statistics |
| HB |
Economic theory |
| HC |
Economic history and conditions |
| HD |
Land. Agriculture. Industry |
| HE |
Transportation and communications |
| HF |
Commerce |
| HG |
Finance |
| HJ |
Public Finance |
| HM |
Sociology (General) |
| HN |
Social History |
| HQ |
Family. Marriage. Women |
| HS |
Societies. Clubs |
| HT |
Communities. Classes. Races |
| HV |
Social pathology. Criminology. Social services |
| HX |
Communism. Socialism. Anarchism |
Class J: Political Science |
| J |
General legislative and executive papers |
| JA |
Political Science (General) |
| JC |
Political theory |
| JF |
Constitutional history - General |
| JK |
Constitutional history - United States |
| JL |
Constitutional history - Canada. Latin America |
| JN |
Constitutional history - Europe |
| JS |
Local government |
| JV |
Colonization. Emigration. Immigration |
| JX |
International law. International relations |
| JZ |
International relations |
Class K: Law |
| K |
Law (General) |
| KD |
United Kingdom. Ireland |
| KE |
Canada |
| KF |
United States |
| KG |
Latin America (General). Mexico. Central America |
| KH |
South America |
| KJ - KKZ |
Europe |
| KL - KP |
Asia and Eurasia |
| KQ - KT |
Africa |
| KU - KW |
Pacific Area |
| KZ |
Law of nations (including treaties, international law, law of the sea and space law) |
Class L: Education |
| L |
Education (General) |
| LA |
History of education |
| LB |
Educational theory and practice |
| LC |
Special aspects of education |
| LD |
Individual institutions - United States |
| LE |
Individual institutions - Americas except the U.S. |
| LF |
Individual institutions - Europe |
| LG |
Individual institutions - Asia. Africa. Oceania |
| LH |
College and school publications |
| LJ |
Student fraternities and sororities |
| LT |
Textbooks (General) |
Class M: Music |
| M1.A1 - M1.A15 |
Manuscripts and printed music in the United States pre-1860 |
| M1.A5 - M3 |
Collections, collected works of individual composers |
| M5 - M1490 |
Instrumental music |
| M1495 - 5000 |
Vocal music |
| M |
Music scores |
| ML |
Literature on music |
| MT |
Music instruction and study |
Class N: Fine Arts |
| N |
Visual arts (General) |
| NA |
Architecture |
| NB |
Sculpture |
| NC |
Graphic Arts (Drawing, Design, Illustration) |
| ND |
Painting |
| NE |
Print media |
| NK |
Decorative arts. Applied arts |
| NX |
Arts in general |
Class P: Languages and Literatures |
| P |
Linguistics |
| PA |
Classical languages and literature (Greek and Latin) |
| PB |
Modern European languages (General). Celtic languages and literature |
| PC |
Romance languages |
| PD |
Germanic languages. Scandinavian languages |
| PE |
English language |
| PF |
West Germanic languages. Dutch, Flemish |
| PG |
Slavic languages and literature |
| PH |
Finno-Ugrian, Basque languages and literatures |
| PJ |
Oriental languages and literatures |
| PK |
Indo-Iranian languages and literatures |
| PL |
East Asian languages and literatures |
| PM |
American Indian languages. Artificial languages |
| PN |
Literature. Literary history and collections. Performing Arts |
| PQ |
Romance literatures |
| PR |
English literature |
| PS |
American literature |
| PT |
Germanic literatures |
| PZ |
Children's literature |
Class Q: Science |
| Q |
Science (General) |
| QA |
Mathematics. Computer Science |
| QB |
Astronomy |
| QC |
Physics |
| QD |
Chemistry |
| QE |
Geology |
| QH |
Natural History. Biology |
| QK |
Botany |
| QL |
Zoology |
| QM |
Human anatomy |
| QP |
Physiology |
| QR |
Microbiology |
Class R: Medicine |
| R |
Medicine (General) |
| RA |
Public aspects of medicine |
| RB |
Pathology |
| RC |
Internal medicine |
| RD |
Surgery |
| RE |
Ophthalmology |
| RG |
Gynecology and Obstetrics |
| RJ |
Pediatrics |
| RK |
Dentistry |
| RL |
Dermatology |
| RM |
Therapeutics. Pharmacology |
| RS |
Pharmacy. Materia Medica |
| RT |
Nursing |
| RV |
Botanic. Thomsonian and Eclectic Medicine |
| RX |
Homeopathy |
| RZ |
Other systems of medicine |
Class S: Agriculture |
| S |
Agriculture (General) |
| SB |
Plant culture |
| SD |
Forestry |
| SF |
Animal culture |
| SH |
Aquaculture. Fisheries. Fishing |
| SK |
Hunting sports |
Class T: Technology |
| T |
Technology (General) |
| TA |
Engineering (General). Civil Engineering (General) |
| TC |
Hydraulic engineering |
| TD |
Environmental technology. Sanitary engineering |
| TE |
Highway engineering |
| TF |
Railroad engineering |
| TG |
Bridge engineering |
| TH |
Building construction |
| TJ |
Mechanical engineering and machinery |
| TK |
Electrical engineering. Electronics. Nuclear engineering |
| TL |
Motor vehicles. Aeronautics. Astronautics |
| TN |
Mining. Metallurgy |
| TP |
Chemical technology |
| TR |
Photography |
| TS |
Manufactures |
| TT |
Handicrafts. Arts and crafts |
| TX |
Home Economics. Cooking |
Class U: Military Science |
| U |
Military science (General) |
| UA |
Armies |
| UB |
Military administration |
| UC |
Maintenance and transportation |
| UD |
Infantry |
| UE |
Cavalry. Armored cavalry |
| UF |
Artillery |
| UG |
Military engineering. Air forces. Air warfare |
| UH |
Other services |
Class V: Naval Science |
| V |
Naval science (General) |
| VA |
Navies |
| VB |
Naval administration |
| VC |
Naval maintenance |
| VD |
Naval seamen |
| VE |
Marines |
| VF |
Naval ordnance |
| VG |
Minor services of navies |
| VK |
Navigation. Merchant marine |
| VM |
Naval architecture. Marine engineering |
Class Z: Bibliography: Library Science |
| Z 4 - Z 115.5 |
Books (General). Writing |
| Z 116 - Z 659 |
Book industries and trade |
| Z 662 - Z 1000.5 |
Libraries |
| Z 1001 - Z 8999 |
Bibliography |
| ZA |
Information resources (General) |
