Número de Clasificación
M - Music
512
C - Historical Sciences
92
S - Agriculture
35
B - Philosophy, Psychology, Religion
28
G - Geography, Anthropology, Recreation
28
A - General Works
23
P - Language and Literature
20
F - General American History
18
R - Medicine
16
D - World History
14
E - United States History
10
V - Naval Science
9
L - Education
8
T - Technology
8
H - Social Science
6
N - Fine Arts
4
J - Political Science
3
K - Law
2
U - Military Science
2
Z - Library Science
2
Q - Science
1