Classification
P - Language and Literature
793,825
M - Music
166,196
B - Philosophy, Psychology, Religion
59,733
A - General Works
48,013
R - Medicine
45,608
H - Social Science
41,680
D - World History
40,834
F - General American History
39,714
Q - Science
33,602
C - Historical Sciences
24,741
T - Technology
16,601
S - Agriculture
15,410
E - United States History
14,854
K - Law
14,133
N - Fine Arts
8,199
J - Political Science
8,003
L - Education
6,132
Z - Library Science
6,104
G - Geography, Anthropology, Recreation
5,159
U - Military Science
1,249
V - Naval Science
361