Classification
D - World History
92
R - Medicine
46
B - Philosophy, Psychology, Religion
36
M - Music
21
H - Social Science
20
P - Language and Literature
19
A - General Works
17
Q - Science
13
Z - Library Science
12
J - Political Science
8
G - Geography, Anthropology, Recreation
7
C - Historical Sciences
5
E - United States History
5
F - General American History
5
L - Education
2
N - Fine Arts
2
K - Law
1
S - Agriculture
1
U - Military Science
1