Número de Clasificación
D - World History
12
P - Language and Literature
12
N - Fine Arts
6
Q - Science
6
B - Philosophy, Psychology, Religion
3
L - Education
3
G - Geography, Anthropology, Recreation
2
H - Social Science
2
R - Medicine
2
S - Agriculture
2
T - Technology
2
A - General Works
1
C - Historical Sciences
1
J - Political Science
1