Número de Clasificación
L - Education
416
T - Technology
278
H - Social Science
213
Q - Science
212
R - Medicine
191
S - Agriculture
146
P - Language and Literature
142
K - Law
115
B - Philosophy, Psychology, Religion
104
A - General Works
59
D - World History
43
N - Fine Arts
41
F - General American History
27
J - Political Science
21
Z - Library Science
16
G - Geography, Anthropology, Recreation
15
C - Historical Sciences
3
M - Music
1