索引号
H - Social Science
394
F - General American History
385
P - Language and Literature
215
J - Political Science
186
K - Law
110
L - Education
92
B - Philosophy, Psychology, Religion
64
S - Agriculture
54
T - Technology
43
G - Geography, Anthropology, Recreation
38
Q - Science
33
M - Music
30
R - Medicine
25
N - Fine Arts
21
D - World History
11
A - General Works
10
C - Historical Sciences
9
V - Naval Science
4
E - United States History
3
Z - Library Science
3
U - Military Science
2