Signum
B - Philosophy, Psychology, Religion
55 976
Z - Library Science
42 260
P - Language and Literature
23 877
D - World History
14 974
Q - Science
13 908
H - Social Science
9 650
R - Medicine
9 495
A - General Works
9 341
N - Fine Arts
8 873
G - Geography, Anthropology, Recreation
5 831
K - Law
5 657
M - Music
3 207
J - Political Science
2 653
T - Technology
2 397
S - Agriculture
2 105
E - United States History
1 672
F - General American History
1 661
U - Military Science
1 341
L - Education
1 028
C - Historical Sciences
868
V - Naval Science
491