Classification
P - Language and Literature
354
Q - Science
51
C - Historical Sciences
34
M - Music
33
R - Medicine
25
A - General Works
15
B - Philosophy, Psychology, Religion
13
D - World History
13
H - Social Science
12
F - General American History
6
T - Technology
6
G - Geography, Anthropology, Recreation
4
S - Agriculture
4
N - Fine Arts
3
J - Political Science
2
K - Law
2
L - Education
1