Classification
P - Language and Literature
477
L - Education
152
Z - Library Science
51
T - Technology
45
M - Music
37
B - Philosophy, Psychology, Religion
32
F - General American History
20
A - General Works
17
R - Medicine
14
H - Social Science
9
C - Historical Sciences
7
E - United States History
6
S - Agriculture
6
D - World History
4
J - Political Science
3
G - Geography, Anthropology, Recreation
2
N - Fine Arts
2
Q - Science
1