Número de Clasificación
P - Language and Literature
2,560
H - Social Science
917
B - Philosophy, Psychology, Religion
641
L - Education
571
R - Medicine
499
D - World History
492
T - Technology
477
F - General American History
411
Q - Science
322
K - Law
256
J - Political Science
225
G - Geography, Anthropology, Recreation
164
N - Fine Arts
135
M - Music
44
E - United States History
42
Z - Library Science
35
C - Historical Sciences
31
S - Agriculture
29
U - Military Science
18
A - General Works
17
V - Naval Science
5