Classification
P - Language and Literature
21
Q - Science
7
K - Law
6
D - World History
4
B - Philosophy, Psychology, Religion
3
H - Social Science
3
R - Medicine
2
A - General Works
1
F - General American History
1
G - Geography, Anthropology, Recreation
1
J - Political Science
1
M - Music
1
N - Fine Arts
1
T - Technology
1