Número de Clasificación
H - Social Science
64
D - World History
23
K - Law
12
R - Medicine
12
J - Political Science
11
G - Geography, Anthropology, Recreation
9
L - Education
9
P - Language and Literature
8
C - Historical Sciences
7
T - Technology
4
Q - Science
3
S - Agriculture
3
U - Military Science
3
A - General Works
2
B - Philosophy, Psychology, Religion
2
Z - Library Science
2
N - Fine Arts
1