Classification
H - Social Science
42
S - Agriculture
18
D - World History
16
P - Language and Literature
9
J - Political Science
8
M - Music
8
Q - Science
8
B - Philosophy, Psychology, Religion
6
L - Education
6
Z - Library Science
5
A - General Works
4
T - Technology
2
C - Historical Sciences
1
G - Geography, Anthropology, Recreation
1
K - Law
1
N - Fine Arts
1