Classification
P - Language and Literature
143
B - Philosophy, Psychology, Religion
39
R - Medicine
17
Q - Science
15
S - Agriculture
6
D - World History
5
N - Fine Arts
5
G - Geography, Anthropology, Recreation
3
M - Music
3
Z - Library Science
3
H - Social Science
1
J - Political Science
1
K - Law
1
T - Technology
1
U - Military Science
1