CLASSIFICATION
D - World History
73
H - Social Science
31
L - Education
26
B - Philosophy, Psychology, Religion
21
P - Language and Literature
21
G - Geography, Anthropology, Recreation
14
J - Political Science
11
Q - Science
6
N - Fine Arts
3
K - Law
2
U - Military Science
2
A - General Works
1
C - Historical Sciences
1
M - Music
1
R - Medicine
1
T - Technology
1