Classification
S - Agriculture
147
K - Law
137
J - Political Science
66
E - United States History
60
H - Social Science
59
Q - Science
15
T - Technology
12
D - World History
11
L - Education
11
A - General Works
5
F - General American History
5
C - Historical Sciences
4
U - Military Science
4
Z - Library Science
4
M - Music
3
R - Medicine
2
G - Geography, Anthropology, Recreation
1
N - Fine Arts
1
P - Language and Literature
1