Classification
S - Agriculture
313
R - Medicine
206
P - Language and Literature
133
D - World History
129
B - Philosophy, Psychology, Religion
107
Q - Science
53
A - General Works
36
C - Historical Sciences
35
T - Technology
25
M - Music
15
G - Geography, Anthropology, Recreation
13
E - United States History
10
F - General American History
6
H - Social Science
3
Z - Library Science
2
U - Military Science
1