Signum
D - World History
1 000
H - Social Science
331
P - Language and Literature
233
J - Political Science
134
B - Philosophy, Psychology, Religion
77
N - Fine Arts
72
L - Education
44
K - Law
40
U - Military Science
21
M - Music
17
G - Geography, Anthropology, Recreation
14
T - Technology
14
Z - Library Science
8
C - Historical Sciences
6
E - United States History
5
Q - Science
5
R - Medicine
5
A - General Works
4
F - General American History
4
V - Naval Science
3