Signum
H - Social Science
294
L - Education
233
D - World History
173
P - Language and Literature
137
R - Medicine
123
F - General American History
109
J - Political Science
105
T - Technology
86
Q - Science
78
K - Law
77
U - Military Science
61
S - Agriculture
49
G - Geography, Anthropology, Recreation
43
M - Music
27
B - Philosophy, Psychology, Religion
26
N - Fine Arts
25
E - United States History
23
A - General Works
15
Z - Library Science
13
C - Historical Sciences
8