CLASSIFICATION
L - Education
485
S - Agriculture
471
H - Social Science
460
C - Historical Sciences
48
T - Technology
28
G - Geography, Anthropology, Recreation
16
A - General Works
10
D - World History
9
K - Law
6
Q - Science
5
N - Fine Arts
3
R - Medicine
3
B - Philosophy, Psychology, Religion
2
F - General American History
1
J - Political Science
1
P - Language and Literature
1