CLASSIFICATION
T - Technology
415
H - Social Science
218
G - Geography, Anthropology, Recreation
121
D - World History
45
L - Education
31
N - Fine Arts
27
P - Language and Literature
12
B - Philosophy, Psychology, Religion
11
A - General Works
7
K - Law
7
Q - Science
7
S - Agriculture
6
R - Medicine
3
J - Political Science
1
U - Military Science
1