Classification
P - Language and Literature
282
D - World History
84
B - Philosophy, Psychology, Religion
44
N - Fine Arts
43
H - Social Science
36
K - Law
17
Q - Science
16
J - Political Science
13
G - Geography, Anthropology, Recreation
10
C - Historical Sciences
6
L - Education
5
A - General Works
3
M - Music
3
R - Medicine
3
S - Agriculture
3
T - Technology
2
E - United States History
1
U - Military Science
1