Classification
P - Language and Literature
4,303
Q - Science
27
B - Philosophy, Psychology, Religion
6
D - World History
5
M - Music
4
T - Technology
4
C - Historical Sciences
3
G - Geography, Anthropology, Recreation
3
L - Education
3
F - General American History
2
Z - Library Science
2
H - Social Science
1
J - Political Science
1
R - Medicine
1