索引號
D - World History
26
P - Language and Literature
23
B - Philosophy, Psychology, Religion
22
K - Law
6
F - General American History
5
N - Fine Arts
5
H - Social Science
4
J - Political Science
3
Q - Science
3
M - Music
2
C - Historical Sciences
1
G - Geography, Anthropology, Recreation
1
T - Technology
1
Z - Library Science
1