Classification
P - Language and Literature
105
R - Medicine
54
H - Social Science
52
B - Philosophy, Psychology, Religion
44
C - Historical Sciences
32
A - General Works
27
T - Technology
24
M - Music
22
Q - Science
16
D - World History
14
F - General American History
7
K - Law
6
S - Agriculture
6
Z - Library Science
6
E - United States History
4
G - Geography, Anthropology, Recreation
3
N - Fine Arts
3
L - Education
2