索引号
P - Language and Literature
86
F - General American History
66
H - Social Science
55
J - Political Science
26
L - Education
20
N - Fine Arts
12
B - Philosophy, Psychology, Religion
6
K - Law
5
T - Technology
5
D - World History
3
M - Music
3
C - Historical Sciences
2
E - United States History
2
G - Geography, Anthropology, Recreation
2
Q - Science
1
Z - Library Science
1