CLASSIFICATION
T - Technology
1,222
Q - Science
667
L - Education
103
H - Social Science
54
R - Medicine
48
S - Agriculture
34
G - Geography, Anthropology, Recreation
17
B - Philosophy, Psychology, Religion
13
D - World History
11
C - Historical Sciences
6
M - Music
6
A - General Works
5
N - Fine Arts
5
Z - Library Science
5
K - Law
3
P - Language and Literature
3
V - Naval Science
2
E - United States History
1
J - Political Science
1
U - Military Science
1