索引號
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16,801
D - World History
5,018
N - Fine Arts
1,973
F - General American History
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B - Philosophy, Psychology, Religion
1,563
E - United States History
1,503
H - Social Science
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M - Music
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C - Historical Sciences
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Q - Science
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R - Medicine
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T - Technology
326
L - Education
269
Z - Library Science
247
G - Geography, Anthropology, Recreation
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K - Law
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J - Political Science
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U - Military Science
86
V - Naval Science
86
S - Agriculture
79
A - General Works
63