- A: General Works
- AE: Encyclopedias
AI: Indexes
AM: Museums
AP:
Periodicals
AS: Academies and learned societies
AY:
Yearbooks, almanacs, directories
- B: Philosophy, Psychology, Religion
- B: History & systems of philosophy
BC: Logic
BD:
Speculative philosophy
BF: Psychology
BH: Aesthetics
BJ:
Ethics
BL: Religions, mythology, rationalism
BM: Judaism
BP: Islam, Bahaism, Theosophy
BR: Christianity (General)
BS:
The Bible
BT: Doctrinal theology
BV: Practical theology
BX: Denominations and sects
- C: Auxiliary Sciences of History
- CB: History of civilization & culture
CC: Archaeology
(General)
CD: Diplomatics, archives, seals
CE: Chronology
CJ:
Numismatics
CN: Epigraphy
CR: Heraldry
CS: Genealogy
CT:
Biography (General)
- D: History - General & Eastern
- D: History (General)
DA: Great Britain
DB: Austria,
Czechoslovakia, Hungary
DC: France
DD: Germany
DE:
Mediterranean, Greco-Roman world
DF: Greece
DG: Italy
DH
- DJ: Netherlands, Belgium, Luxembourg
DK: Russia
DL:
Northern Europe
DP: Spain, Portugal
DQ: Switzerland
DR:
Eastern Europe; Turkey
DS: Asia
DS520-DS689: Southeast Asia
DT:
Africa
DU: Oceania, Australia, New Zealand
DX: Gypsies
- E & F: History - Western Hemisphere
- E: America (General),United States
F1-975: United States
local history
F1001-1140: Canada
F1201-1392: Mexico
F1401-3799:
Central and South America, the Caribbean area
- G: Geography, Anthropology, Recreation
- G: Atlases, Globes, Maps
GA: Mathematical geography,
cartography
GB: Physical geography
GC: Oceanography
GF:
Human ecology
GN: Anthropology
GR: Folklore
GT: Manners
and customs
GV: Sports and recreation
GV1580-GV1799: Dance
- H: Social Sciences and Business
- H: Social sciences (General)
HA: Statistics
HB: Economic
theory
HC: Economic history and conditions
HD: Land,
agriculture, industry
HE: Transportation and communication
HF:
Commerce
HG: Finance
HJ: Public finance
HM: Sociology
HN: Social history
HQ: Social groups; the family,
marriage, women
HS: Societies and clubs
HS: Societies and
clubs
HS: Societies and clubs
HV: Social pathology,
criminology, welfare
HX: Socialism, communism, anarchism
- J: Political Science
- J: Official documents
JA: Collections and general works
JC:
Political theory
JF: Constitutional history and administration
JK:
U.S. constitutional history
JS: Local government
JV:
Colonization, emigration and immigration
JX: International law,
international relations
- K: Law
- K: Law (General)
KD: Law of the United Kingdom and Ireland
KE:
Law of Canada
KF: Law of the United States
KFN: Individual
states
KG: Law of Latin America, Mexico and Central America
(General)
KH: Law of South America (General)
KJ: Law of
Europe
- L: Education
- L: Education (General)
LA: History of education
LB:
Theory and practice
LC: Special aspects
LD: Individual U.S.
institutions
LH: College and school publications
LJ:
Student fraternities and societies
LT: Textbooks (General)
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- M: Music
- M: Music (General)
ML: Literature 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 art
NX: Arts in general
- P: Language and Literature
- P: Linguistics
PA: Greek and Latin
PB: Modern European
languages; Celtic languages
PC: Romance languages
PD: Old
Germanic and Scandinavian languages
PE: English language
PF:
Dutch, Flemish, German languages
PG: Slavic languages and
literature
PH: Finno-Ugrian and Basque languages and literature
PJ:
Middle Eastern languages and literature
PK: Indo-Iranian
languages and literature
PL: East Asian, African, and Oceanic
languages and literature
PM: American Indian; artificial
languages
PN: Literature; literary history and collections
PN1993-PN1996:
Motion Pictures
PQ: Romance literature
PR: English
Literature
PS: American literature
PT: Germanic literature
PZ: Children's literature
- Q: Science
- Q Science (General)
QA: Mathematics
QB: Astronomy
QC:
Physics
QD: Chemistry
QE: Geology
QH: Natural history
(General)
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
RD: Surgery
RE:
Ophthalmology
RF: Otorhinolaryngology
RG: Gynecology and
obstetrics
RJ: Pediatrics
RK: Dentistry
RL: Dermatology
RM:
Therapeutics; pharmacology
RS: Pharmacy and materia medica
RT:
Nursing
RX: Homeopathy
RZ: Other systems of medicine
- S: Agriculture
- S: Agriculture (General)
SB: Plant culture
SD: Forestry
SF:
Animal culture
SH: Aquaculture, fisheries, fishing
SK:
Hunting
- T: Technology
- T: Technology (General)
TA: Engineering (General)
TC:
Hydraulic engineering
TD: Environmental technology
TE:
Highway engineering
TF: Railroad engineering
TG: Bridge
engineering
TH: Building construction
TJ: Mechanical
engineering and machinery
TK: Electrical engineering;
electronics
TL: Motor vehicles; aeronautics; astronautics
TN:
Mining engineering; metallurgy
TP: Chemical technology
TR:
Photography
TS: Manufactures
TT: Handicrafts; arts and
crafts
TX: Home economics; cooking
- U: Military Science
- UA: Armies
UB: Military administration
UC: Maintenance
and transportation
UD: Infantry
UE: Cavalry. Armored and
mechanized cavalry
UF: Artillery
UG: Military engineering
UH:
Other services
- V: Naval Science
- 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. Shipbuilding. Marine engineering
- Z: Library Science
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