Número de Clasificación
T - Technology
98
C - Historical Sciences
54
D - World History
54
A - General Works
53
E - United States History
52
B - Philosophy, Psychology, Religion
48
M - Music
22
P - Language and Literature
13
K - Law
2
S - Agriculture
2
G - Geography, Anthropology, Recreation
1
J - Political Science
1
L - Education
1
R - Medicine
1
U - Military Science
1
V - Naval Science
1
Z - Library Science
1