Classification
P - Language and Literature
69
B - Philosophy, Psychology, Religion
39
M - Music
39
R - Medicine
20
C - Historical Sciences
19
D - World History
9
A - General Works
8
E - United States History
6
F - General American History
4
K - Law
4
Q - Science
3
T - Technology
3
J - Political Science
2
G - Geography, Anthropology, Recreation
1
H - Social Science
1
N - Fine Arts
1
U - Military Science
1