Número de Clasificación
C - Historical Sciences
39
B - Philosophy, Psychology, Religion
8
F - General American History
7
S - Agriculture
7
D - World History
3
G - Geography, Anthropology, Recreation
3
P - Language and Literature
2
A - General Works
1
K - Law
1
L - Education
1
N - Fine Arts
1
R - Medicine
1
T - Technology
1
V - Naval Science
1