Classification
S - Agriculture
225
M - Music
181
H - Social Science
97
F - General American History
66
T - Technology
7
J - Political Science
6
K - Law
5
L - Education
5
D - World History
4
B - Philosophy, Psychology, Religion
3
Q - Science
3
U - Military Science
2
Z - Library Science
2
C - Historical Sciences
1
G - Geography, Anthropology, Recreation
1
N - Fine Arts
1
R - Medicine
1