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Library of Congress Subject Areas
(173)
A General Works
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AC Collections. Series. Collected works
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AI Indexes (General)
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D History General and Old World
(1)
D History (General)
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D880 Developing Countries
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G Geography. Anthropology. Recreation
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GE Environmental Sciences
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H Social Sciences
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H Social Sciences (General)
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HB Economic Theory
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HG Finance
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K Law
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K Law (General)
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L Education
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L Education (General)
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LA History of education
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Q Science
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Q Science (General)
(3)
QD Chemistry
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QE Geology
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QK Botany
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S Agriculture
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S Agriculture (General)
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SF Animal culture
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SH Aquaculture. Fisheries. Angling
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T Technology
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T Technology (General)
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TA Engineering (General). Civil engineering (General)
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TD Environmental technology. Sanitary engineering
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TK Electrical engineering. Electronics Nuclear engineering
(23)
TN Mining engineering. Metallurgy
(1)
TP Chemical technology
(2)
TX Home economics
(1)
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