索引号
A - General Works
251
F - General American History
202
D - World History
162
H - Social Science
146
P - Language and Literature
120
T - Technology
41
R - Medicine
33
J - Political Science
15
E - United States History
12
K - Law
9
Q - Science
9
U - Military Science
9
G - Geography, Anthropology, Recreation
3
L - Education
2
B - Philosophy, Psychology, Religion
1
M - Music
1
N - Fine Arts
1
S - Agriculture
1
V - Naval Science
1
Z - Library Science
1