索引号
H - Social Science
88
D - World History
49
J - Political Science
32
K - Law
30
B - Philosophy, Psychology, Religion
22
L - Education
18
P - Language and Literature
11
G - Geography, Anthropology, Recreation
10
C - Historical Sciences
9
N - Fine Arts
6
R - Medicine
4
F - General American History
3
T - Technology
3
U - Military Science
3
Z - Library Science
3
A - General Works
2
M - Music
2