Classification
R - Medicine
99
H - Social Science
93
M - Music
31
B - Philosophy, Psychology, Religion
22
A - General Works
21
P - Language and Literature
20
C - Historical Sciences
7
D - World History
6
K - Law
4
U - Military Science
2
E - United States History
1
F - General American History
1
J - Political Science
1
L - Education
1
S - Agriculture
1