Classification
R - Medicine
5,908
D - World History
3,011
B - Philosophy, Psychology, Religion
1,815
Q - Science
1,347
H - Social Science
1,233
F - General American History
805
A - General Works
792
P - Language and Literature
412
G - Geography, Anthropology, Recreation
395
T - Technology
386
S - Agriculture
337
Z - Library Science
264
E - United States History
258
J - Political Science
207
M - Music
202
C - Historical Sciences
174
L - Education
136
N - Fine Arts
121
U - Military Science
115
K - Law
106
V - Naval Science
30