• A
• B
• C
• D
• E
• F
• G
• H
• J
• K
• L
• M
• N
• P
• Q
• R
• S
• T
• U
• V
• Z

A

GENERAL WORKS

• AC Collections. Series. Collected works.
• AE Encyclopedias (General).
• AG Dictionaries. General reference works.
• AI Indexes (General).
• AM Museums. Collectors and collecting.
• AN Newspapers.
• AP Periodicals (General).
• AS Academies and learned societies.
• AY Yearbooks. Almanacs. Directories.
• AZ History of scholarship and learning. The humanities.

B

PHILOSOPHY PSYCHOLOGY RELIGION

• B Philosophy (General).
• BC Logic.
• BD Speculative philosophy.

PSYCHOLOGY

• BF Psychology. Parapsychology. Occult sciences.
• BH Aesthetics.
• BJ Ethics.

RELIGION

• BL Religions. Mythology. Rationalism.
• BM Judaism.
• BP Islam. Bahaism. Theosophy, etc.
• BQ Buddhism.
• BR Christianity (General).
• BS The Bible and exegesis.
• BT Doctrinal theology. Apologetics.
• BV Practical Christian theology.
• BX Christian denominations.

C

AUXILIARY SCIENCES OF HISTORY

• C Auxiliary sciences of history (General).
• CB History of civilization.
• CC Archaeology (General).
• CD Diplomatics. Archives. Seals.
• CE Technical chronology. Calendar.
• CJ Numismatics.
• CN Inscriptions. Epigraphy.
• CR Heraldry.
• CS Genealogy.
• CT Biography.

D

HISTORY: GENERAL AND OLD WORLD

• D History (General).
• DA Great Britain.
• DB Austria. Czechoslovakia. Hungary.
• DC France.
• DD Germany.
• DE The Mediterranean region. (Greco-Roman)
• DF Greece.
• DG Italy.
• DH-DJ Netherlands. Belgium. Luxemburg.
• DJK Eastern Europe.
• DK Russia. Poland. Finland.
• DL Northern Europe. Scandinavia.
• DP Spain. Portugal.
• DQ Switzerland.
• DR Balkan Peninsula.
• DS Asia.
• DT Africa.
• DU Oceania (South Seas). Australia. New Zealand. Hawaii.
• DX Gypsies.

E-F

HISTORY OF AMERICA

• E America (General).
• F United States local history. North America. Central America. South America.

G

GEOGRAPHY ANTHROPOLOGY RECREATION

• G Geography (General). Atlases. Maps.
• GA Mathematical geography. Cartography.
• GB Physical geography.
• GC Oceanography.
• GF Human ecology. Anthropogeography.
• GN Anthropology.
• GR Folklore.
• GT Manners and customs (General).
• GV Recreation. Sports.

H

SOCIAL SCIENCES

• H Social sciences (General).
• HA Statistics.

ECONOMICS

• HB Economic theory.
• HC Economic history and conditions.
• HD Production. Land use. Agriculture. Industry. Labor.
• HE Transportation and communications.
• HF Commerce.
• HG Finance.
• HJ Public finance.

SOCIOLOGY

• HM Sociology (General and theoretical).
• HN Social history. Social problems. Social reform.

SOCIAL GROUPS

• HQ The family. Marriage. Woman.
• HS Societies: Secret, benevolent, clubs.
• HT Communities. Classes. Races.
• HV Social pathology. Social and public welfare. Criminology.
• HX Socialism. Communism. Anarchism.

J

POLITICAL SCIENCE

• J General legislative and executive papers.
• JA Collections and general works.
• JC Political theory. Theory of the state.
• JF Constitutional history and administration.

COUNTRIES

• JK United States.
• JL British America. Latin America.
• JN Europe.
• JQ Asia. Africa. Australia. Oceania.
• JS Local government.
• JV Colonies and colonization. Emigration and immigration.
• JX International law. International relations.

K

LAW

• K Law (General)
• KD-KDK Law of the United Kingdom and Ireland
• KE-KEZ Law of Canada

LAW OF THE UNITED STATES

• KF Federal law. Common and collective state law.
• KFA-KFW Law of individual states.
• KFX Law of individual cities.
• KFZ Law of territories.
• KG-KKZ Law of countries other than U.S. and Canada.

L

EDUCATION

• L Education (General).
• LA History of education.
• LB Theory and practice of education.
• LC Special aspects of education.

INDIVIDUAL UNIVERSITIES, COLLEGES, AND SCHOOLS

• LD United States.
• LE America, except United States.
• LF Europe.
• LG Asia. Africa. Oceania.
• LH College and school publications
• LJ Student fraternities and societies, U.S.

M

MUSIC AND BOOKS ON MUSIC

• M Music.
• ML Literature (including videos) of music.
• MT Music instruction and study.

N

FINE ARTS

• N Visual Arts (General).
• NA Architecture.
• NB Sculpture.
• NC Drawing. Design. Illustration.
• ND Painting.
• NE Print media.
• NK Decorative arts. Applied arts. Decoration and ornament.
• NX Arts in general.

P

LANGUAGE AND LITERATURE

• P Philology and linquistics (General).
• PA Classical languages and literature.
• PB General works.
• PC Romance languages.
• PD Germanic languages.
• PE English.
• PF West Germanic.
• PG Slavic. Baltic, Albanian languages and literature.
• PH Finno-Ugrian, Basque languages and literature.
• PJ Oriental languages and literature.
• PK Indo-Iranian.
• PL Languages and literature of Eastern Asia, Africa, Oceania.
• PM American Indian languages. Also artifical languages.
• PN Literary history and collections (General).
• PQ 1-3999 French literature.
• Italian literature.
• Spanish literature.
• Portuguese literature.
• PR English literature.
• PS American literature.
• PT Germanic literature.
• PZ Juvenile literature.

Q

SCIENCE

• Q Science (General).
• QA Mathematics.
• QB Astronomy.
• QC Physics.
• QD Chemistry.
• QE Geology.
• QH Natural history (General). Biology.
• QK Botany.
• QL Zoology.
• QM Human anatomy.
• QP Physiology.
• QR Microbiology.

R

MEDICINE

• R Medicine (General).
• RA Public aspects of medicine.
• RB Pathology.
• RC Internal medicine. Practice of medicine.
• RD Surgery.
• RE Opthalmology (eyes).
• RF Otorhinolaryngology (ear, nose, and throat).
• RG Gynecology and obstetrics.
• RJ Pediatrics.
• RK Dentistry.
• RL Dermatology.
• RM Therapeutics. Pharmacology.
• RS Pharmacy and materia medica.
• RT Nursing.
• RV Botanic, Thomsonian, and eclectic medicine.
• RX Homeopathy.
• RZ Other systems of medicine. (Chiropractic, Osteopathy, Mental Healing)

S

AGRICULTURE

• S Agriculture (General).
• SB Plant culture.
• SD Forestry.
• SF Animal culture.
• SH Aquaculture. Fisheries. Angling.
• SK Hunting. Wildlife management.

T

TECHNOLOGY

• T Technology (General).
• TA Engineering (General). Civil Engineering (General).
• TC Hydraulic engineering.
• TD Environmental technology. Sanitary engineering.
• TE Highway engineering. Roads and pavements.
• TF Railroad engineering and operation.
• TG Bridge engineering.
• TH Building construction.
• TJ Mechanical engineering. Machinery.
• TK Electrical engineering. Electronics. Nuclear engineering.
• TL Motor vehicles. Aeronautics. Astronautics.
• TN Mining engineering. Metallurgy.
• TP Chemical technology.
• TR Photography.
• TS Manufactures.
• TT Handicrafts. Arts and Crafts.
• TX Home economics.

U

MILITARY SCIENCE

• U Military science (General).
• UA Armies: Organization, description, facilities.
• UB Military administration.
• UC Maintenance and transportation.
• UD Infantry.
• UE Cavalry. Armored and mechanized cavalry.
• UF Artillery.
• UG Military engineering. Air forces.
• UH Other services.

V

NAVAL SCIENCE

• V-VM Naval science.

Z

BIBLIOGRAPHY LIBRARY SCIENCE

• Z Books in general. Book industries and trade. Libraries and library science. Bibliography.

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