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Library of Congress Subject Areas
(364)
A General Works
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AC Collections. Series. Collected works
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AI Indexes (General)
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AS Academies and learned societies (General)
(1)
B Philosophy. Psychology. Religion
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BL Religion
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BP Islam. Bahaism. Theosophy, etc
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C Auxiliary Sciences of History
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CT Biography
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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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HD Industries. Land use. Labor
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P Language and Literature
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PE English
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Q Science
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Q Science (General)
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R Medicine
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R Medicine (General)
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RA Public aspects of medicine
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RA0421 Public health. Hygiene. Preventive Medicine
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RG Gynecology and obstetrics
(64)
RT Nursing
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RZ Other systems of medicine
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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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TD Environmental technology. Sanitary engineering
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Z Bibliography. Library Science. Information Resources
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ZA Information resources
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ZA4050 Electronic information resources
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