索引号
D - World History
25
P - Language and Literature
15
B - Philosophy, Psychology, Religion
7
N - Fine Arts
7
C - Historical Sciences
6
H - Social Science
6
G - Geography, Anthropology, Recreation
5
L - Education
4
F - General American History
3
R - Medicine
3
E - United States History
2
J - Political Science
2
M - Music
2
Q - Science
2
K - Law
1
Z - Library Science
1