Número de Clasificación
D - World History
2,051
F - General American History
1,920
H - Social Science
1,406
P - Language and Literature
1,213
B - Philosophy, Psychology, Religion
734
J - Political Science
533
L - Education
425
K - Law
357
N - Fine Arts
343
G - Geography, Anthropology, Recreation
222
Q - Science
220
A - General Works
201
T - Technology
153
R - Medicine
150
E - United States History
148
Z - Library Science
136
C - Historical Sciences
109
M - Music
67
U - Military Science
56
S - Agriculture
34
V - Naval Science
23