Classification
T - Technology
294
Q - Science
115
R - Medicine
104
H - Social Science
62
D - World History
47
M - Music
42
B - Philosophy, Psychology, Religion
33
F - General American History
33
P - Language and Literature
30
C - Historical Sciences
28
A - General Works
26
E - United States History
13
K - Law
5
N - Fine Arts
4
S - Agriculture
3
G - Geography, Anthropology, Recreation
2
Z - Library Science
2