Classification
T - Technology
67
Q - Science
61
A - General Works
42
R - Medicine
39
H - Social Science
37
S - Agriculture
34
D - World History
24
B - Philosophy, Psychology, Religion
19
P - Language and Literature
18
M - Music
13
G - Geography, Anthropology, Recreation
9
L - Education
9
K - Law
7
N - Fine Arts
6
J - Political Science
5
E - United States History
4
Z - Library Science
4
F - General American History
3
U - Military Science
3
V - Naval Science
1