Número de Clasificación
M - Music
71
C - Historical Sciences
19
G - Geography, Anthropology, Recreation
8
A - General Works
5
R - Medicine
5
B - Philosophy, Psychology, Religion
4
P - Language and Literature
4
D - World History
3
F - General American History
2
H - Social Science
2
L - Education
2
T - Technology
2
N - Fine Arts
1
S - Agriculture
1