Classification
R - Medicine
102
P - Language and Literature
73
S - Agriculture
5
C - Historical Sciences
3
D - World History
3
K - Law
3
Q - Science
3
A - General Works
2
B - Philosophy, Psychology, Religion
2
F - General American History
2
G - Geography, Anthropology, Recreation
2
Z - Library Science
2
E - United States History
1
L - Education
1
V - Naval Science
1