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A - General Works |
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B - Philosophy, Psychology, Religion |
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C - Auxiliary Sciences of History |
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D - World History (Europe, Asia, Africa, Australia, Ect. |
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E - History of the Americas |
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F - History of the Americas |
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G - Geography, Anthropology, Recreation |
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H - Social Sciences |
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J - Political Science |
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K - Law |
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L - Education |
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M - Music |
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N - Fine Arts |
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P - Language and Literature |
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Q - Science |
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R - Medicine |
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S - Agriculture |
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T - Technology |
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U - Military Science |
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V - Naval Science |
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Z - Bibliography, Library Science, Information Resources |