Número de Clasificación
M - Music
74
C - Historical Sciences
31
B - Philosophy, Psychology, Religion
28
A - General Works
22
T - Technology
22
G - Geography, Anthropology, Recreation
8
P - Language and Literature
8
R - Medicine
6
N - Fine Arts
4
D - World History
3
F - General American History
3
H - Social Science
2
L - Education
2
S - Agriculture
2
Z - Library Science
2
K - Law
1