索引号
H - Social Science
21
D - World History
13
L - Education
12
K - Law
10
P - Language and Literature
10
J - Political Science
8
Q - Science
6
R - Medicine
6
N - Fine Arts
5
B - Philosophy, Psychology, Religion
3
G - Geography, Anthropology, Recreation
3
Z - Library Science
2
M - Music
1
S - Agriculture
1
T - Technology
1
U - Military Science
1