Classification
R - Medicine
37
S - Agriculture
36
H - Social Science
35
T - Technology
35
A - General Works
31
Q - Science
28
B - Philosophy, Psychology, Religion
21
Z - Library Science
8
D - World History
7
G - Geography, Anthropology, Recreation
6
E - United States History
4
M - Music
4
J - Political Science
3
K - Law
3
P - Language and Literature
3
L - Education
2
U - Military Science
2
N - Fine Arts
1