Classification
H - Social Science
176
C - Historical Sciences
42
S - Agriculture
24
M - Music
21
P - Language and Literature
19
A - General Works
17
L - Education
16
R - Medicine
14
T - Technology
12
D - World History
6
N - Fine Arts
6
Q - Science
5
F - General American History
3
G - Geography, Anthropology, Recreation
3
Z - Library Science
3
B - Philosophy, Psychology, Religion
2
J - Political Science
2
K - Law
2