Classification
P - Language and Literature
133
Q - Science
104
R - Medicine
103
B - Philosophy, Psychology, Religion
13
T - Technology
10
A - General Works
3
D - World History
2
K - Law
2
L - Education
2
M - Music
2
E - United States History
1
F - General American History
1
H - Social Science
1
J - Political Science
1