A
General Works
AC
Collections. Series. Collected works
AE
Encyclopedias
AG
Dictionaries and other general reference works
AI
Indexes
AM
Museums. Collectors and collecting
AN
Newspapers
AP
Periodicals
AS
Academies and learned societies
AY
Yearbooks. Almanacs. Directories
AZ
History of scholarship and learning. The humanities
B
Philosophy. Psychology. Religions
B
Philosophy (General)
BC
Logic
BD
Speculative philosophy
BF
Psychology
BH
Aesthetics
BJ
Ethics
BL
Religions. Mythology. Rationalism
BM
Judaism
BP
Islam. Bahaism. Theosophy, etc.
BQ
Buddhism
BR
Christianity
BS
The Bible
BT
Doctrinal Theology
BV
Practical Theology
BX
Christian Denominations
C
Auxiliary sciences of history
C
Auxiliary Sciences of History (General)
CB
History of Civilization
CC
Archaeology
CD
Diplomatics. Archives. Seals
CE
Technical Chronology. Calendar
CJ
Numismatics
CN
Inscriptions. Epigraphy
CR
Heraldry
CS
Genealogy
CT
Biography
D
World History and History of Europe,Asia,Africa, Australia, New Zealand, etc.
D
History (General)
DA
Great Britain
DAW
Central Europe
DB
Austria - Liechtenstein - Hungary – Czechoslovakia
DC
France - Andorra – Monaco
DD
Germany
DE
Greco-Roman World
DF
Greece
DG
Italy. Malta
DH
Low Countries - Benelux Countries
DJ
Netherlands (Holland)
DJK
Eastern Europe (General)
DK
Russia. Soviet Union. Former Soviet Republics – Poland
DL
Northern Europe. Scandinavia
DP
Spain – Portuga
DQ
Switzerland
DR
Balkan Peninsula
DS
Asia
DT
Africa
DU
Oceania (South Seas)
DX
Romanies
E-F
History of the Americas
G
Geography. Anthropology. Recreation.
G
Geography (General). Atlases. Maps
GA
Mathematical geography. Cartography
GB
Physical geography
GC
Oceanography
GE
Environmental Sciences
GF
Human ecology. Anthropogeography
GN
Anthropology
GR
Folklore
GT
Manners and customs (General)
GV
Recreation. Leisure. Sports
H
Social sciences
H
Social sciences (General)
HA
Statistics
HB
Economic theory. Demography
HC
Economic history and conditions
HD
Industries. Land use. Labor
HE
Transportation and communications
HF
Commerce
HG
Finance
HJ
Public finance
HM
Sociology (General)
HN
Social history and conditions. Social problems. Social reform
HQ
The family. Marriage. Woman
HS
Societies: secret, benevolent, etc.
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
Political science (General)
JC
Political theory
JF
Political institutions and public administration
JJ
Political institutions and public administration - North America
JK
Political institutions and public administration - United States
JL
Political institutions and public administration - Canada, Latin America, etc.
JN
Political institutions and public administration - Europe
JQ
Political institutions and public administration - Asia, Africa, Australia, Pacific Area, etc.
JS
Local government. Municipal government
JV
Colonies and colonization. Emigration and immigration. International migration
JX
International law,see JZ and KZ
JZ
International relations
K
Law
K
Law in General. Comparative and uniform law. Jurisprudence
KB
Religious law in general. Comparative religious law. Jurisprudence
KBM
Jewish law
KBP
Islamic law
KBR
History of canon law
KBU
Law of the Roman Catholic Church. The Holy See
KD-KDK
United Kingdom and Ireland
KDZ
America. North America
KE
Canada
KF
United States
KG
Latin America - Mexico and Central America - West Indies. Caribbean area
KH
South America
KJ-KKZ
Europe
KL-KWX
Asia and Eurasia, Africa, Pacific Area, and Antarctica
KZ
Law of nations
L
Education
L
Education (General)
LA
History of education
LB
Theory and practice of education
LC
Special aspects of education
LD
Individual institutions - United States
LE
Individual institutions - America (except United States)
LF
Individual institutions – Europe
LG
Individual institutions - Asia, Africa, Indian Ocean islands, Australia, New Zealand, Pacific islands
LH
College and school magazines and papers
LJ
Student fraternities and societies, United States
LT
Textbooks
M
Music
M
Music
ML
Literature on music
MT
Instruction and study
N
Fine arts
N
Visual arts
NA
Architecture
NB
Sculpture
NC
Drawing. Design. Illustration
ND
Painting
NE
Print media
NK
Decorative arts
NX
Arts in general
P
Language and Literature
P
Philology. Linguistics
PA
Greek language and literature. Latin language and literature
PB
Modern languages. Celtic languages
PC
Romanic languages
PD
Germanic languages. Scandinavian languages
PE
English language
PF
West Germanic languages
PG
Slavic languages. Baltic languages. Albanian language
PH
Uralic languages. Basque language
PJ
Oriental languages and literatures
PK
Indo-Iranian languages and literatures
PL
Languages and literatures of Eastern Asia, Africa, Oceania
PM
Hyperborean, Indian, and artificial languages
PN
Literature (General)
PQ
French literature - Italian literature - Spanish literature - Portuguese literature
PR
English literature
PS
American literature
PT
German literatures - Dutch literature-Flemish literature since 1830 - Afrikaans literature - Scandinavian literature - Old Norse literature : Old Icelandic and Old Norwegian - Modern Icelandic Li...
PZ
Fiction and juvenile belles letters
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
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
RV
Botanic, Thomsonian, and electric medicine
RX
Homeopathy
RZ
Other system of medicine
S
Agriculture
S
Agriculture (General)
SB
Plant culture
SD
Forestry
SF
Animal culture
SH
Aquaculture. Fisheries. Angling
SK
Hunting sports
T
Technology
T
Technology (General)
TA
Engineering (General). Civil engineering (General)
TC
Hydraulic engineering. Ocean 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 and 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, distribution, military situation
UB
Military administration
UC
Maintenance and transportation
UD
Infantry
UE
Cavalry. Armor
UF
Artillery
UG
Military engineering. Air forces
UH
Other services
V
Naval science
V
Naval science (General)
VA
Navies: organization, description, naval situation
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
Bibliography. Library Science. Information Resources (General)
Z
Books (General). Writing. Paleography. Book industries and trade. Libraries. Bibliography
ZA
Information resources (General)
