Classification
D - World History
33
G - Geography, Anthropology, Recreation
10
H - Social Science
5
J - Political Science
3
R - Medicine
3
A - General Works
2
M - Music
2
Q - Science
2
Z - Library Science
2
B - Philosophy, Psychology, Religion
1
K - Law
1
L - Education
1
N - Fine Arts
1
P - Language and Literature
1
S - Agriculture
1