Classification
P - Language and Literature
24,515
K - Law
452
B - Philosophy, Psychology, Religion
154
H - Social Science
151
Q - Science
137
D - World History
71
R - Medicine
55
N - Fine Arts
45
L - Education
36
J - Political Science
32
G - Geography, Anthropology, Recreation
16
M - Music
10
S - Agriculture
9
T - Technology
6
A - General Works
5
C - Historical Sciences
5
F - General American History
5
U - Military Science
4
Z - Library Science
2
E - United States History
1