索引號
A - General Works
13
B - Philosophy, Psychology, Religion
32
C - Historical Sciences
2
D - World History
45
E - United States History
8
F - General American History
3
G - Geography, Anthropology, Recreation
26
H - Social Science
64
L - Education
1
M - Music
6
N - Fine Arts
3
P - Language and Literature
2,164
Q - Science
1
R - Medicine
5
T - Technology
7
U - Military Science
1
V - Naval Science
1