Número de Clasificación
C - Historical Sciences
437
M - Music
184
S - Agriculture
32
G - Geography, Anthropology, Recreation
23
B - Philosophy, Psychology, Religion
20
A - General Works
19
P - Language and Literature
19
F - General American History
15
R - Medicine
14
D - World History
13
V - Naval Science
9
T - Technology
8
H - Social Science
6
E - United States History
5
L - Education
3
N - Fine Arts
3
K - Law
2
J - Political Science
1
Q - Science
1
U - Military Science
1