索引号
H - Social Science
116
P - Language and Literature
48
F - General American History
37
K - Law
37
L - Education
30
R - Medicine
29
J - Political Science
26
Q - Science
26
T - Technology
26
Z - Library Science
13
D - World History
11
G - Geography, Anthropology, Recreation
11
M - Music
11
A - General Works
9
B - Philosophy, Psychology, Religion
9
E - United States History
8
N - Fine Arts
7
C - Historical Sciences
5
S - Agriculture
5
U - Military Science
3