Classification
R - Medicine
126
Q - Science
125
P - Language and Literature
95
B - Philosophy, Psychology, Religion
43
T - Technology
41
E - United States History
25
C - Historical Sciences
22
D - World History
21
S - Agriculture
21
G - Geography, Anthropology, Recreation
11
A - General Works
5
H - Social Science
4
F - General American History
3
M - Music
1
V - Naval Science
1