索引號
H - Social Science
163
P - Language and Literature
51
B - Philosophy, Psychology, Religion
17
L - Education
13
D - World History
11
K - Law
11
J - Political Science
5
C - Historical Sciences
4
E - United States History
4
F - General American History
4
Q - Science
3
R - Medicine
3
G - Geography, Anthropology, Recreation
1