Classification
Q - Science
508
P - Language and Literature
465
G - Geography, Anthropology, Recreation
22
C - Historical Sciences
16
T - Technology
14
F - General American History
11
A - General Works
9
D - World History
6
B - Philosophy, Psychology, Religion
4
E - United States History
3
H - Social Science
2
Z - Library Science
2
M - Music
1
S - Agriculture
1