索引號
P - Language and Literature
435
B - Philosophy, Psychology, Religion
240
D - World History
232
H - Social Science
133
N - Fine Arts
102
M - Music
73
F - General American History
64
Z - Library Science
51
E - United States History
41
Q - Science
31
J - Political Science
26
G - Geography, Anthropology, Recreation
21
K - Law
17
R - Medicine
17
L - Education
16
C - Historical Sciences
14
A - General Works
13
T - Technology
7
U - Military Science
7
S - Agriculture
6
V - Naval Science
2