Classification
R - Medicine
6,674
B - Philosophy, Psychology, Religion
3,156
D - World History
978
A - General Works
733
Q - Science
349
C - Historical Sciences
126
P - Language and Literature
123
H - Social Science
108
T - Technology
101
G - Geography, Anthropology, Recreation
65
E - United States History
55
F - General American History
43
S - Agriculture
35
M - Music
21
J - Political Science
13
Z - Library Science
9
N - Fine Arts
6
L - Education
3
U - Military Science
3
K - Law
1
V - Naval Science
1