Classification
T - Technology
76
P - Language and Literature
54
D - World History
48
R - Medicine
43
B - Philosophy, Psychology, Religion
31
C - Historical Sciences
13
E - United States History
11
H - Social Science
11
Q - Science
10
A - General Works
8
M - Music
6
F - General American History
4
K - Law
1
N - Fine Arts
1
Z - Library Science
1