CLASSIFICATION
G - Geography, Anthropology, Recreation
4,051
R - Medicine
1,137
Q - Science
526
L - Education
419
H - Social Science
256
B - Philosophy, Psychology, Religion
186
T - Technology
95
D - World History
57
P - Language and Literature
39
S - Agriculture
28
K - Law
19
M - Music
17
U - Military Science
15
N - Fine Arts
11
A - General Works
9
J - Political Science
9
Z - Library Science
9
V - Naval Science
8
C - Historical Sciences
3
E - United States History
1
F - General American History
1