索引號
H - Social Science
142
P - Language and Literature
99
F - General American History
52
R - Medicine
46
Q - Science
45
B - Philosophy, Psychology, Religion
42
L - Education
41
G - Geography, Anthropology, Recreation
37
K - Law
34
T - Technology
27
D - World History
25
A - General Works
21
J - Political Science
19
S - Agriculture
19
N - Fine Arts
18
Z - Library Science
14
E - United States History
8
C - Historical Sciences
5
M - Music
4
U - Military Science
1