Signum
D - World History
1 133
H - Social Science
467
P - Language and Literature
435
B - Philosophy, Psychology, Religion
189
J - Political Science
165
K - Law
151
L - Education
146
N - Fine Arts
85
F - General American History
66
G - Geography, Anthropology, Recreation
60
Z - Library Science
53
T - Technology
50
R - Medicine
47
Q - Science
43
C - Historical Sciences
39
U - Military Science
21
M - Music
19
E - United States History
17
V - Naval Science
12
S - Agriculture
9
A - General Works
3