Classification
P - Language and Literature
793,095
M - Music
167,100
B - Philosophy, Psychology, Religion
58,929
A - General Works
47,956
R - Medicine
45,582
H - Social Science
41,365
F - General American History
39,898
D - World History
38,426
Q - Science
33,504
C - Historical Sciences
24,423
T - Technology
16,549
S - Agriculture
15,388
E - United States History
14,818
K - Law
14,102
J - Political Science
7,901
N - Fine Arts
7,455
L - Education
6,120
Z - Library Science
5,992
G - Geography, Anthropology, Recreation
4,862
U - Military Science
1,217
V - Naval Science
359