Número de Clasificación
D - World History
338
P - Language and Literature
55
N - Fine Arts
43
B - Philosophy, Psychology, Religion
23
C - Historical Sciences
17
M - Music
11
H - Social Science
9
Z - Library Science
7
A - General Works
5
G - Geography, Anthropology, Recreation
5
L - Education
3
E - United States History
2
Q - Science
2
R - Medicine
2
T - Technology
2
J - Political Science
1