Número de Clasificación
H - Social Science
37
B - Philosophy, Psychology, Religion
15
D - World History
9
G - Geography, Anthropology, Recreation
9
Z - Library Science
8
P - Language and Literature
6
T - Technology
5
K - Law
4
R - Medicine
4
J - Political Science
3
L - Education
3
S - Agriculture
3
M - Music
2
A - General Works
1