Classification
P - Language and Literature
1,532
K - Law
171
Q - Science
38
B - Philosophy, Psychology, Religion
29
H - Social Science
27
D - World History
21
N - Fine Arts
18
J - Political Science
8
M - Music
6
R - Medicine
5
G - Geography, Anthropology, Recreation
4
L - Education
4
T - Technology
4
S - Agriculture
2
U - Military Science
2
Z - Library Science
2
E - United States History
1
F - General American History
1