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Library of Congress Subject Areas
(482)
C Auxiliary Sciences of History
(1)
C Auxiliary sciences of history (General)
(1)
D History General and Old World
(1)
D History (General)
(1)
D901 Europe (General)
(1)
G Geography. Anthropology. Recreation
(71)
G Geography (General)
(5)
GA Mathematical geography. Cartography
(2)
GE Environmental Sciences
(65)
GF Human ecology. Anthropogeography
(1)
H Social Sciences
(18)
HA Statistics
(1)
HB Economic Theory
(9)
HC Economic History and Conditions
(2)
HD Industries. Land use. Labor
(9)
HD28 Management. Industrial Management
(8)
HD61 Risk Management
(1)
HE Transportation and Communications
(5)
HG Finance
(6)
HJ Public Finance
(2)
HM Sociology
(1)
K Law
(1)
K Law (General)
(1)
L Education
(7)
L Education (General)
(7)
N Fine Arts
(47)
NA Architecture
(47)
Q Science
(65)
QA Mathematics
(31)
QA75 Electronic computers. Computer science
(8)
QA76 Computer software
(6)
QC Physics
(19)
QD Chemistry
(14)
QE Geology
(3)
QH Natural history
(1)
QH301 Biology
(1)
QR Microbiology
(1)
R Medicine
(2)
R Medicine (General)
(2)
S Agriculture
(4)
S Agriculture (General)
(2)
SB Plant culture
(2)
T Technology
(425)
T Technology (General)
(152)
TA Engineering (General). Civil engineering (General)
(212)
TC Hydraulic engineering. Ocean engineering
(2)
TD Environmental technology. Sanitary engineering
(112)
TE Highway engineering. Roads and pavements
(52)
TF Railroad engineering and operation
(2)
TG Bridge engineering
(11)
TH Building construction
(144)
TJ Mechanical engineering and machinery
(56)
TK Electrical engineering. Electronics Nuclear engineering
(18)
TL Motor vehicles. Aeronautics. Astronautics
(9)
TN Mining engineering. Metallurgy
(5)
TP Chemical technology
(40)
U Military Science
(3)
U Military Science (General)
(3)