Classification
Q - Science
341
P - Language and Literature
295
R - Medicine
235
B - Philosophy, Psychology, Religion
138
T - Technology
134
S - Agriculture
98
C - Historical Sciences
79
A - General Works
64
D - World History
48
E - United States History
20
G - Geography, Anthropology, Recreation
13
H - Social Science
7
M - Music
2
N - Fine Arts
2
K - Law
1