Número de Clasificación
M - Music
244
C - Historical Sciences
184
S - Agriculture
16
B - Philosophy, Psychology, Religion
14
F - General American History
10
G - Geography, Anthropology, Recreation
7
A - General Works
6
D - World History
6
E - United States History
6
P - Language and Literature
6
R - Medicine
6
H - Social Science
5
V - Naval Science
4
N - Fine Arts
3
T - Technology
3
U - Military Science
2
Z - Library Science
2
J - Political Science
1
K - Law
1
L - Education
1