Classification
T - Technology
67
R - Medicine
52
S - Agriculture
45
H - Social Science
36
K - Law
26
J - Political Science
14
L - Education
10
M - Music
8
Q - Science
7
D - World History
5
P - Language and Literature
4
A - General Works
3
B - Philosophy, Psychology, Religion
3
U - Military Science
3
E - United States History
2
F - General American History
2
G - Geography, Anthropology, Recreation
1
N - Fine Arts
1
Z - Library Science
1