Classification
R - Medicine
3,884
B - Philosophy, Psychology, Religion
1,795
D - World History
1,561
A - General Works
870
H - Social Science
713
M - Music
392
F - General American History
337
Q - Science
284
P - Language and Literature
249
C - Historical Sciences
160
S - Agriculture
150
T - Technology
150
L - Education
124
Z - Library Science
99
G - Geography, Anthropology, Recreation
80
J - Political Science
78
E - United States History
59
K - Law
48
U - Military Science
40
N - Fine Arts
33
V - Naval Science
14