索引号
D - World History
88
P - Language and Literature
77
F - General American History
45
H - Social Science
41
B - Philosophy, Psychology, Religion
23
E - United States History
23
J - Political Science
14
Q - Science
10
N - Fine Arts
7
T - Technology
7
G - Geography, Anthropology, Recreation
4
L - Education
4
R - Medicine
4
C - Historical Sciences
3
K - Law
3
U - Military Science
3
A - General Works
2
S - Agriculture
1
Z - Library Science
1