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Library of Congress Subject Areas
(824)
A General Works
(12)
AC Collections. Series. Collected works
(3)
AI Indexes (General)
(5)
AM Museums (General). Collectors and collecting (General)
(1)
AS Academies and learned societies (General)
(3)
B Philosophy. Psychology. Religion
(1)
B Philosophy (General)
(1)
BJ Ethics
(1)
C Auxiliary Sciences of History
(1)
CB History of civilization
(1)
D History General and Old World
(4)
D History (General)
(4)
D051 Ancient History
(2)
DA Great Britain
(1)
DJ Netherlands (Holland)
(1)
E History America
(1)
E11 America (General)
(1)
G Geography. Anthropology. Recreation
(13)
G Geography (General)
(8)
GB Physical geography
(1)
GE Environmental Sciences
(4)
H Social Sciences
(78)
H Social Sciences (General)
(30)
HA Statistics
(1)
HB Economic Theory
(12)
HC Economic History and Conditions
(12)
HD Industries. Land use. Labor
(2)
HD28 Management. Industrial Management
(2)
HD61 Risk Management
(1)
HE Transportation and Communications
(1)
HF Commerce
(3)
HF5601 Accounting
(3)
HG Finance
(23)
HJ Public Finance
(11)
HM Sociology
(3)
HN Social history and conditions. Social problems. Social reform
(5)
HQ The family. Marriage. Woman
(2)
HS Societies secret benevolent etc
(2)
HV Social pathology. Social and public welfare
(2)
HX Socialism. Communism. Anarchism
(3)
J Political Science
(16)
J General legislative and executive papers
(2)
JA Political science (General)
(13)
JC Political theory
(1)
JF Political institutions (General)
(1)
JN Political institutions (Europe)
(1)
JS Local government Municipal government
(1)
JX International law
(1)
JZ International relations
(4)
K Law
(14)
K Law (General)
(12)
KF United States Federal Law
(1)
KZ Law of Nations
(2)
L Education
(21)
L Education (General)
(19)
LA History of education
(1)
LC Special aspects of education
(4)
LC5201 Education extension. Adult education. Continuing education
(2)
N Fine Arts
(4)
N Visual arts (General) For photography, see TR
(1)
NC Drawing Design Illustration
(1)
ND Painting
(1)
NX Arts in general
(2)
P Language and Literature
(4)
P Philology. Linguistics
(1)
PE English
(2)
PR English literature
(1)
Q Science
(194)
Q Science (General)
(49)
QA Mathematics
(42)
QA75 Electronic computers. Computer science
(35)
QA76 Computer software
(3)
QC Physics
(9)
QD Chemistry
(42)
QE Geology
(5)
QH Natural history
(3)
QH301 Biology
(2)
QH426 Genetics
(1)
QM Human anatomy
(26)
QP Physiology
(19)
QR Microbiology
(29)
QR180 Immunology
(2)
QR355 Virology
(3)
R Medicine
(343)
R Medicine (General)
(214)
RA Public aspects of medicine
(28)
RA0421 Public health. Hygiene. Preventive Medicine
(9)
RA1001 Forensic Medicine. Medical jurisprudence. Legal medicine
(1)
RB Pathology
(6)
RC Internal medicine
(66)
RC0254 Neoplasms. Tumors. Oncology (including Cancer)
(1)
RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
(1)
RD Surgery
(29)
RE Ophthalmology
(8)
RF Otorhinolaryngology
(74)
RG Gynecology and obstetrics
(5)
RJ Pediatrics
(4)
RJ101 Child Health. Child health services
(1)
RM Therapeutics. Pharmacology
(2)
RS Pharmacy and materia medica
(5)
RT Nursing
(18)
RZ Other systems of medicine
(15)
S Agriculture
(16)
S Agriculture (General)
(9)
SB Plant culture
(5)
SF Animal culture
(3)
T Technology
(139)
T Technology (General)
(12)
TA Engineering (General). Civil engineering (General)
(39)
TC Hydraulic engineering. Ocean engineering
(1)
TD Environmental technology. Sanitary engineering
(6)
TE Highway engineering. Roads and pavements
(1)
TG Bridge engineering
(1)
TH Building construction
(2)
TJ Mechanical engineering and machinery
(23)
TK Electrical engineering. Electronics Nuclear engineering
(34)
TL Motor vehicles. Aeronautics. Astronautics
(4)
TN Mining engineering. Metallurgy
(3)
TP Chemical technology
(25)
TS Manufactures
(2)
Z Bibliography. Library Science. Information Resources
(37)
Z665 Library Science. Information Science
(2)
Z719 Libraries (General)
(1)
ZA Information resources
(34)
ZA4050 Electronic information resources
(34)