CLASSIFICATION
Q - Science
1,507
T - Technology
277
G - Geography, Anthropology, Recreation
77
L - Education
27
S - Agriculture
14
Z - Library Science
12
C - Historical Sciences
11
H - Social Science
4
D - World History
3
F - General American History
2
P - Language and Literature
2
B - Philosophy, Psychology, Religion
1
E - United States History
1
J - Political Science
1
R - Medicine
1
U - Military Science
1