索引号
D - World History
99,730
N - Fine Arts
80,010
H - Social Science
46,328
P - Language and Literature
46,303
B - Philosophy, Psychology, Religion
23,143
K - Law
20,703
M - Music
15,134
J - Political Science
11,696
G - Geography, Anthropology, Recreation
11,028
Z - Library Science
8,685
T - Technology
6,839
C - Historical Sciences
6,378
Q - Science
5,512
L - Education
5,124
R - Medicine
3,872
S - Agriculture
2,735
A - General Works
2,431
U - Military Science
1,754
F - General American History
1,256
E - United States History
688
V - Naval Science
554