索引号
B - Philosophy, Psychology, Religion
601
L - Education
316
E - United States History
72
H - Social Science
18
P - Language and Literature
16
A - General Works
5
Q - Science
4
U - Military Science
4
D - World History
3
J - Political Science
3
C - Historical Sciences
2
G - Geography, Anthropology, Recreation
1
K - Law
1
M - Music
1
N - Fine Arts
1
R - Medicine
1