Signum
F - General American History
8 372
H - Social Science
2 743
P - Language and Literature
1 733
J - Political Science
1 083
N - Fine Arts
716
B - Philosophy, Psychology, Religion
596
M - Music
239
G - Geography, Anthropology, Recreation
237
T - Technology
214
E - United States History
177
K - Law
158
L - Education
152
C - Historical Sciences
149
D - World History
141
Q - Science
140
R - Medicine
116
Z - Library Science
72
A - General Works
46
U - Military Science
33
S - Agriculture
28
V - Naval Science
10