索引號
P - Language and Literature
370
H - Social Science
39
N - Fine Arts
26
F - General American History
16
G - Geography, Anthropology, Recreation
10
E - United States History
7
B - Philosophy, Psychology, Religion
4
D - World History
4
K - Law
4
M - Music
4
R - Medicine
3
Z - Library Science
3
C - Historical Sciences
2
L - Education
2
Q - Science
2
S - Agriculture
2