Classification
R - Medicine
28
P - Language and Literature
15
D - World History
13
M - Music
6
N - Fine Arts
6
B - Philosophy, Psychology, Religion
4
F - General American History
4
K - Law
4
S - Agriculture
3
A - General Works
2
J - Political Science
2
C - Historical Sciences
1
E - United States History
1
G - Geography, Anthropology, Recreation
1
H - Social Science
1
L - Education
1
Q - Science
1