Classification
R - Medicine
196
Q - Science
188
P - Language and Literature
162
B - Philosophy, Psychology, Religion
51
S - Agriculture
44
C - Historical Sciences
24
A - General Works
21
D - World History
11
F - General American History
11
T - Technology
10
H - Social Science
8
E - United States History
5
M - Music
5
Z - Library Science
2
G - Geography, Anthropology, Recreation
1