CLASSIFICATION
H - Social Science
1,525
R - Medicine
1,062
Q - Science
980
T - Technology
799
L - Education
313
S - Agriculture
171
G - Geography, Anthropology, Recreation
133
J - Political Science
125
P - Language and Literature
108
D - World History
97
K - Law
95
B - Philosophy, Psychology, Religion
75
Z - Library Science
55
M - Music
32
N - Fine Arts
27
C - Historical Sciences
10
U - Military Science
9
E - United States History
8
A - General Works
6
F - General American History
4
V - Naval Science
2