Classification
H - Social Science
288
T - Technology
263
R - Medicine
248
Q - Science
172
S - Agriculture
151
B - Philosophy, Psychology, Religion
58
D - World History
50
L - Education
49
M - Music
47
G - Geography, Anthropology, Recreation
33
P - Language and Literature
31
E - United States History
28
J - Political Science
25
Z - Library Science
23
K - Law
19
A - General Works
17
N - Fine Arts
17
C - Historical Sciences
12
F - General American History
11
U - Military Science
2