Classification
H - Social Science
34
M - Music
33
D - World History
10
Q - Science
8
J - Political Science
7
L - Education
6
Z - Library Science
5
C - Historical Sciences
4
S - Agriculture
4
B - Philosophy, Psychology, Religion
2
G - Geography, Anthropology, Recreation
2
T - Technology
2
A - General Works
1
F - General American History
1
K - Law
1
N - Fine Arts
1
P - Language and Literature
1