Classification
R - Medicine
25
S - Agriculture
20
B - Philosophy, Psychology, Religion
18
M - Music
11
Q - Science
8
H - Social Science
7
P - Language and Literature
7
D - World History
6
T - Technology
6
C - Historical Sciences
3
A - General Works
2
E - United States History
2
J - Political Science
2
G - Geography, Anthropology, Recreation
1
K - Law
1
N - Fine Arts
1
V - Naval Science
1