Número de Clasificación
M - Music
74
C - Historical Sciences
20
G - Geography, Anthropology, Recreation
8
R - Medicine
6
A - General Works
5
P - Language and Literature
5
B - Philosophy, Psychology, Religion
4
D - World History
3
S - Agriculture
3
E - United States History
2
F - General American History
2
H - Social Science
2
L - Education
2
T - Technology
2
J - Political Science
1
N - Fine Arts
1