CLASSIFICATION
T - Technology
7,147
L - Education
5,756
H - Social Science
4,436
R - Medicine
2,201
N - Fine Arts
1,472
Q - Science
1,148
B - Philosophy, Psychology, Religion
910
G - Geography, Anthropology, Recreation
643
S - Agriculture
621
P - Language and Literature
249
D - World History
167
K - Law
150
C - Historical Sciences
105
J - Political Science
57
V - Naval Science
52
Z - Library Science
51
A - General Works
31
F - General American History
28
M - Music
19
E - United States History
13
U - Military Science
5