索引号
H - Social Science
404
K - Law
308
F - General American History
181
J - Political Science
176
B - Philosophy, Psychology, Religion
170
P - Language and Literature
84
L - Education
78
G - Geography, Anthropology, Recreation
54
R - Medicine
44
Q - Science
40
N - Fine Arts
32
T - Technology
21
U - Military Science
19
A - General Works
16
S - Agriculture
13
M - Music
9
Z - Library Science
9
C - Historical Sciences
4
D - World History
4
E - United States History
2