索引號
P - Language and Literature
22,888
D - World History
7,922
B - Philosophy, Psychology, Religion
6,419
H - Social Science
6,098
N - Fine Arts
4,779
M - Music
2,688
G - Geography, Anthropology, Recreation
2,507
Q - Science
2,289
K - Law
1,904
Z - Library Science
1,479
J - Political Science
1,403
R - Medicine
1,039
A - General Works
980
T - Technology
891
L - Education
841
C - Historical Sciences
754
S - Agriculture
714
E - United States History
496
U - Military Science
351
F - General American History
331
V - Naval Science
175