Signum
H - Social Science
528
J - Political Science
38
S - Agriculture
10
K - Law
9
C - Historical Sciences
8
L - Education
6
Q - Science
6
F - General American History
5
B - Philosophy, Psychology, Religion
3
T - Technology
3
G - Geography, Anthropology, Recreation
2
D - World History
1
P - Language and Literature
1
Z - Library Science
1