索引號
P - Language and Literature
71,632
D - World History
55,834
N - Fine Arts
34,665
H - Social Science
31,096
F - General American History
17,868
B - Philosophy, Psychology, Religion
17,240
E - United States History
11,143
M - Music
10,781
G - Geography, Anthropology, Recreation
7,404
J - Political Science
5,711
T - Technology
5,187
L - Education
5,142
Z - Library Science
4,299
R - Medicine
3,990
K - Law
3,486
C - Historical Sciences
3,063
Q - Science
3,036
A - General Works
2,363
U - Military Science
2,055
S - Agriculture
1,769
V - Naval Science
988