Signum
P - Language and Literature
511
Q - Science
299
L - Education
268
G - Geography, Anthropology, Recreation
105
N - Fine Arts
105
H - Social Science
103
B - Philosophy, Psychology, Religion
94
R - Medicine
81
K - Law
54
T - Technology
50
J - Political Science
47
D - World History
26
F - General American History
7
C - Historical Sciences
5
Z - Library Science
5
M - Music
2
S - Agriculture
2
U - Military Science
2
A - General Works
1
E - United States History
1