索引号
P - Language and Literature
70
D - World History
47
H - Social Science
43
N - Fine Arts
24
B - Philosophy, Psychology, Religion
8
R - Medicine
8
J - Political Science
7
M - Music
5
T - Technology
5
G - Geography, Anthropology, Recreation
4
Q - Science
4
U - Military Science
4
C - Historical Sciences
3
Z - Library Science
3
A - General Works
2
E - United States History
2
L - Education
2
S - Agriculture
2
V - Naval Science
2
F - General American History
1
K - Law
1