Signum
H - Social Science
3 151
F - General American History
3 033
P - Language and Literature
2 544
G - Geography, Anthropology, Recreation
2 313
Q - Science
2 138
K - Law
2 096
L - Education
1 715
E - United States History
1 325
S - Agriculture
992
T - Technology
954
C - Historical Sciences
811
N - Fine Arts
780
J - Political Science
398
B - Philosophy, Psychology, Religion
250
Z - Library Science
212
R - Medicine
207
M - Music
179
A - General Works
161
U - Military Science
85
D - World History
78
V - Naval Science
37