Classification
R - Medicine
1,731
P - Language and Literature
771
C - Historical Sciences
318
M - Music
197
B - Philosophy, Psychology, Religion
195
A - General Works
179
D - World History
78
Q - Science
78
Z - Library Science
34
F - General American History
31
E - United States History
11
H - Social Science
7
S - Agriculture
6
G - Geography, Anthropology, Recreation
5
T - Technology
5
N - Fine Arts
3
L - Education
2
U - Military Science
1