Classification
P - Language and Literature
14,785
H - Social Science
271
K - Law
90
B - Philosophy, Psychology, Religion
61
D - World History
42
Q - Science
39
G - Geography, Anthropology, Recreation
23
M - Music
20
N - Fine Arts
18
J - Political Science
17
L - Education
17
T - Technology
9
R - Medicine
8
Z - Library Science
5
F - General American History
4
S - Agriculture
4
A - General Works
3
C - Historical Sciences
3
E - United States History
2
U - Military Science
1