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Library of Congress Subject Areas
(3551)
A General Works
(5)
AC Collections. Series. Collected works
(1)
AI Indexes (General)
(1)
AM Museums (General). Collectors and collecting (General)
(2)
AS Academies and learned societies (General)
(1)
B Philosophy. Psychology. Religion
(59)
BC Logic
(2)
BF Psychology
(56)
BX Christian Denominations
(1)
C Auxiliary Sciences of History
(10)
CB History of civilization
(3)
CC Archaeology
(5)
CD Diplomatics. Archives. Seals
(1)
CD921 Archives
(1)
CE Technical chronology. Calendar
(1)
D History General and Old World
(5)
DB Austria
(4)
DC France
(3)
E History America
(5)
E11 America (General)
(1)
E151 United States (General)
(5)
F History United States, Canada, Latin America
(5)
F001 United States local history
(1)
F1001 Canada (General)
(3)
F1201 Latin America (General)
(1)
G Geography. Anthropology. Recreation
(10)
G Geography (General)
(1)
GA Mathematical geography. Cartography
(3)
GB Physical geography
(5)
GC Oceanography
(1)
GE Environmental Sciences
(2)
H Social Sciences
(8)
H Social Sciences (General)
(2)
HB Economic Theory
(4)
HD Industries. Land use. Labor
(2)
HD28 Management. Industrial Management
(2)
J Political Science
(4)
JA Political science (General)
(2)
JC Political theory
(1)
JF Political institutions (General)
(1)
K Law
(6)
K Law (General)
(1)
KF United States Federal Law
(5)
L Education
(20)
L Education (General)
(4)
LA History of education
(3)
LB Theory and practice of education
(12)
LB2300 Higher Education
(10)
LE Individual institutions (America except United States)
(1)
M Music and Books on Music
(8)
M Music
(1)
ML Literature of music
(2)
MT Musical instruction and study
(5)
N Fine Arts
(6)
N Visual arts (General) For photography, see TR
(2)
NA Architecture
(2)
NB Sculpture
(1)
NC Drawing Design Illustration
(1)
P Language and Literature
(4)
P Philology. Linguistics
(1)
PA Classical philology
(2)
PB Modern European Languages
(1)
PB1501 Gaelic (Scottish Gaelic, Erse)
(1)
Q Science
(87)
Q Science (General)
(30)
QC Physics
(3)
QD Chemistry
(38)
QE Geology
(1)
QH Natural history
(3)
QH301 Biology
(1)
QH426 Genetics
(2)
QR Microbiology
(15)
QR180 Immunology
(5)
R Medicine
(3348)
R Medicine (General)
(1327)
RA Public aspects of medicine
(368)
RA0421 Public health. Hygiene. Preventive Medicine
(226)
RA1001 Forensic Medicine. Medical jurisprudence. Legal medicine
(17)
RB Pathology
(140)
RC Internal medicine
(394)
RC0254 Neoplasms. Tumors. Oncology (including Cancer)
(171)
RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
(33)
RC1200 Sports Medicine
(63)
RD Surgery
(51)
RE Ophthalmology
(8)
RF Otorhinolaryngology
(5)
RG Gynecology and obstetrics
(99)
RJ Pediatrics
(89)
RJ101 Child Health. Child health services
(41)
RK Dentistry
(37)
RL Dermatology
(5)
RM Therapeutics. Pharmacology
(363)
RS Pharmacy and materia medica
(135)
RT Nursing
(79)
RV Botanic, Thomsonian, and eclectic medicine
(151)
RX Homeopathy
(3)
RZ Other systems of medicine
(708)
S Agriculture
(2)
SB Plant culture
(2)
T Technology
(14)
T Technology (General)
(6)
TA Engineering (General). Civil engineering (General)
(4)
TD Environmental technology. Sanitary engineering
(4)