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Library of Congress Subject Areas
(39281)
A General Works
(20888)
AC Collections. Series. Collected works
(8199)
AI Indexes (General)
(12206)
AM Museums (General). Collectors and collecting (General)
(53)
AS Academies and learned societies (General)
(982)
AZ History of Scholarship The Humanities
(96)
B Philosophy. Psychology. Religion
(44)
B Philosophy (General)
(24)
BC Logic
(1)
BD Speculative Philosophy
(1)
BF Psychology
(6)
BH Aesthetics
(1)
BJ Ethics
(11)
BL Religion
(9)
BP Islam. Bahaism. Theosophy, etc
(14)
BQ Buddhism
(1)
BR Christianity
(1)
BT Doctrinal Theology
(1)
BV Practical Theology
(1)
BV1460 Religious Education
(1)
C Auxiliary Sciences of History
(869)
C Auxiliary sciences of history (General)
(4)
CB History of civilization
(13)
CC Archaeology
(26)
CD Diplomatics. Archives. Seals
(825)
CD921 Archives
(725)
CS Genealogy
(1)
D History General and Old World
(44)
D History (General)
(23)
D204 Modern History
(2)
D880 Developing Countries
(5)
DS Asia
(24)
E History America
(8)
E11 America (General)
(5)
E151 United States (General)
(3)
F History United States, Canada, Latin America
(1)
F001 United States local history
(1)
G Geography. Anthropology. Recreation
(79)
G Geography (General)
(4)
GA Mathematical geography. Cartography
(2)
GE Environmental Sciences
(46)
GF Human ecology. Anthropogeography
(4)
GN Anthropology
(13)
GR Folklore
(14)
GT Manners and customs
(11)
GV Recreation Leisure
(1)
H Social Sciences
(1723)
H Social Sciences (General)
(615)
HA Statistics
(11)
HB Economic Theory
(794)
HC Economic History and Conditions
(37)
HD Industries. Land use. Labor
(174)
HD28 Management. Industrial Management
(166)
HD61 Risk Management
(4)
HF Commerce
(104)
HF5601 Accounting
(89)
HG Finance
(40)
HJ Public Finance
(29)
HM Sociology
(33)
HN Social history and conditions. Social problems. Social reform
(9)
HQ The family. Marriage. Woman
(10)
HV Social pathology. Social and public welfare
(3)
J Political Science
(17)
J General legislative and executive papers
(1)
JA Political science (General)
(4)
JC Political theory
(3)
JF Political institutions (General)
(2)
JN Political institutions (Europe)
(1)
JN101 Great Britain
(1)
JS Local government Municipal government
(2)
JX International law
(2)
JZ International relations
(2)
K Law
(454)
K Law (General)
(447)
KD England and Wales
(1)
KF United States Federal Law
(3)
KZ Law of Nations
(7)
L Education
(146)
L Education (General)
(109)
LA History of education
(1)
LB Theory and practice of education
(33)
LB1501 Primary Education
(2)
LB1603 Secondary Education. High schools
(3)
LB2300 Higher Education
(27)
LB2361 Curriculum
(1)
LC Special aspects of education
(6)
LC5201 Education extension. Adult education. Continuing education
(4)
LT Textbooks
(5)
M Music and Books on Music
(4)
M Music
(2)
ML Literature of music
(2)
MT Musical instruction and study
(1)
N Fine Arts
(36)
N Visual arts (General) For photography, see TR
(2)
NC Drawing Design Illustration
(1)
NE Print media
(1)
NK Decorative arts Applied arts Decoration and ornament
(30)
NX Arts in general
(3)
P Language and Literature
(189)
P Philology. Linguistics
(75)
PA Classical philology
(1)
PE English
(16)
PG Slavic, Baltic, Albanian languages and literature
(1)
PI Oriental languages and literatures
(9)
PL Languages and literatures of Eastern Asia, Africa, Oceania
(29)
PN Literature (General)
(48)
PN0080 Criticism
(13)
PN1990 Broadcasting
(1)
PN1993 Motion Pictures
(1)
PN2000 Dramatic representation. The Theater
(5)
PR English literature
(24)
PZ Childrens literature
(6)
Q Science
(396)
Q Science (General)
(106)
QA Mathematics
(213)
QA75 Electronic computers. Computer science
(83)
QA76 Computer software
(25)
QC Physics
(4)
QD Chemistry
(44)
QE Geology
(1)
QH Natural history
(15)
QH301 Biology
(12)
QH426 Genetics
(2)
QK Botany
(2)
QL Zoology
(7)
QP Physiology
(2)
QR Microbiology
(9)
R Medicine
(6113)
R Medicine (General)
(2210)
RA Public aspects of medicine
(818)
RA0421 Public health. Hygiene. Preventive Medicine
(770)
RA1001 Forensic Medicine. Medical jurisprudence. Legal medicine
(23)
RB Pathology
(7)
RC Internal medicine
(44)
RC0254 Neoplasms. Tumors. Oncology (including Cancer)
(4)
RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
(4)
RC1200 Sports Medicine
(1)
RD Surgery
(10)
RE Ophthalmology
(11)
RG Gynecology and obstetrics
(10)
RJ Pediatrics
(65)
RJ101 Child Health. Child health services
(5)
RK Dentistry
(1555)
RL Dermatology
(10)
RM Therapeutics. Pharmacology
(5)
RS Pharmacy and materia medica
(430)
RT Nursing
(1005)
RZ Other systems of medicine
(4)
Human
(3)
S Agriculture
(6334)
S Agriculture (General)
(6031)
SB Plant culture
(107)
SD Forestry
(1)
SF Animal culture
(234)
T Technology
(1089)
T Technology (General)
(341)
T201 Patents. Trademarks
(16)
TA Engineering (General). Civil engineering (General)
(107)
TC Hydraulic engineering. Ocean engineering
(4)
TD Environmental technology. Sanitary engineering
(195)
TE Highway engineering. Roads and pavements
(13)
TF Railroad engineering and operation
(2)
TH Building construction
(7)
TJ Mechanical engineering and machinery
(99)
TK Electrical engineering. Electronics Nuclear engineering
(275)
TL Motor vehicles. Aeronautics. Astronautics
(3)
TN Mining engineering. Metallurgy
(2)
TP Chemical technology
(9)
TR Photography
(2)
TS Manufactures
(111)
TX Home economics
(7)
Z Bibliography. Library Science. Information Resources
(2102)
Z004 Books. Writing. Paleography
(10)
Z665 Library Science. Information Science
(27)
Z719 Libraries (General)
(34)
ZA Information resources
(2041)
ZA4050 Electronic information resources
(335)
ZA4450 Databases
(1554)