Classification
P - Language and Literature
93
K - Law
45
H - Social Science
31
D - World History
27
Q - Science
10
J - Political Science
7
B - Philosophy, Psychology, Religion
4
U - Military Science
3
L - Education
2
C - Historical Sciences
1
G - Geography, Anthropology, Recreation
1
M - Music
1
R - Medicine
1
S - Agriculture
1