Signum
H - Social Science
27 882
P - Language and Literature
20 283
R - Medicine
12 352
L - Education
11 869
Q - Science
11 739
B - Philosophy, Psychology, Religion
10 320
T - Technology
10 218
K - Law
10 044
J - Political Science
5 912
S - Agriculture
5 320
F - General American History
4 630
G - Geography, Anthropology, Recreation
4 296
D - World History
4 065
N - Fine Arts
2 680
Z - Library Science
1 650
A - General Works
1 127
C - Historical Sciences
876
M - Music
755
E - United States History
521
U - Military Science
329
V - Naval Science
76