索引號
H - Social Science
354
J - Political Science
26
C - Historical Sciences
19
S - Agriculture
18
L - Education
16
T - Technology
15
K - Law
10
B - Philosophy, Psychology, Religion
5
N - Fine Arts
5
R - Medicine
5
G - Geography, Anthropology, Recreation
3
P - Language and Literature
3
A - General Works
2
V - Naval Science
2
F - General American History
1
Q - Science
1
Z - Library Science
1