Classification
R - Medicine
131
D - World History
85
H - Social Science
56
Q - Science
39
B - Philosophy, Psychology, Religion
38
F - General American History
28
A - General Works
27
L - Education
17
S - Agriculture
14
P - Language and Literature
12
T - Technology
11
G - Geography, Anthropology, Recreation
7
J - Political Science
6
Z - Library Science
6
K - Law
5
C - Historical Sciences
4
M - Music
3
N - Fine Arts
3
E - United States History
1