Classification
H - Social Science
97
S - Agriculture
19
D - World History
16
L - Education
13
M - Music
12
J - Political Science
10
K - Law
8
T - Technology
6
Z - Library Science
6
G - Geography, Anthropology, Recreation
5
Q - Science
5
R - Medicine
4
C - Historical Sciences
3
E - United States History
3
N - Fine Arts
3
B - Philosophy, Psychology, Religion
2
P - Language and Literature
1
U - Military Science
1