Número de Clasificación
H - Social Science
2,310
D - World History
2,291
F - General American History
944
J - Political Science
858
K - Law
266
N - Fine Arts
258
P - Language and Literature
226
B - Philosophy, Psychology, Religion
181
T - Technology
100
E - United States History
77
M - Music
71
U - Military Science
62
G - Geography, Anthropology, Recreation
60
R - Medicine
45
C - Historical Sciences
40
Z - Library Science
30
L - Education
20
A - General Works
19
S - Agriculture
9
Q - Science
8