Número de Clasificación
D - World History
10,120
P - Language and Literature
2,949
B - Philosophy, Psychology, Religion
2,538
H - Social Science
911
G - Geography, Anthropology, Recreation
814
C - Historical Sciences
438
N - Fine Arts
426
J - Political Science
293
Z - Library Science
261
M - Music
231
K - Law
202
T - Technology
119
L - Education
108
R - Medicine
108
Q - Science
76
E - United States History
75
A - General Works
49
U - Military Science
49
S - Agriculture
48
F - General American History
36
V - Naval Science
13