Classification
P - Language and Literature
135
C - Historical Sciences
34
D - World History
24
H - Social Science
19
M - Music
16
B - Philosophy, Psychology, Religion
8
K - Law
8
Q - Science
7
G - Geography, Anthropology, Recreation
5
J - Political Science
4
S - Agriculture
4
F - General American History
2
T - Technology
2
E - United States History
1
L - Education
1
R - Medicine
1