Classification
H - Social Science
22
P - Language and Literature
22
R - Medicine
20
F - General American History
19
D - World History
13
M - Music
13
B - Philosophy, Psychology, Religion
8
Q - Science
5
S - Agriculture
5
L - Education
3
A - General Works
2
G - Geography, Anthropology, Recreation
2
K - Law
2
C - Historical Sciences
1
Z - Library Science
1