Classification
S - Agriculture
53
P - Language and Literature
32
R - Medicine
19
H - Social Science
16
B - Philosophy, Psychology, Religion
13
Q - Science
12
T - Technology
12
A - General Works
8
F - General American History
7
M - Music
7
C - Historical Sciences
5
D - World History
4
Z - Library Science
2
E - United States History
1
L - Education
1