Classification
P - Language and Literature
138
H - Social Science
38
K - Law
27
D - World History
14
N - Fine Arts
8
Q - Science
7
B - Philosophy, Psychology, Religion
6
L - Education
6
G - Geography, Anthropology, Recreation
4
J - Political Science
4
T - Technology
3
R - Medicine
2
S - Agriculture
2
M - Music
1
U - Military Science
1