索引號
H - Social Science
180
J - Political Science
18
G - Geography, Anthropology, Recreation
8
P - Language and Literature
5
Z - Library Science
5
B - Philosophy, Psychology, Religion
4
K - Law
4
S - Agriculture
4
C - Historical Sciences
3
F - General American History
1
N - Fine Arts
1
R - Medicine
1
T - Technology
1