索引號
H - Social Science
34,151
D - World History
32,960
J - Political Science
10,670
P - Language and Literature
4,489
E - United States History
3,984
N - Fine Arts
3,598
F - General American History
2,631
L - Education
2,447
B - Philosophy, Psychology, Religion
2,139
K - Law
1,077
U - Military Science
1,043
G - Geography, Anthropology, Recreation
758
M - Music
675
T - Technology
607
Z - Library Science
601
C - Historical Sciences
558
A - General Works
421
R - Medicine
130
Q - Science
103
S - Agriculture
101
V - Naval Science
29