Número de Clasificación
H - Social Science
20,930
P - Language and Literature
18,102
B - Philosophy, Psychology, Religion
9,316
L - Education
8,972
R - Medicine
8,214
Q - Science
8,118
K - Law
7,160
T - Technology
6,833
J - Political Science
4,684
F - General American History
3,801
S - Agriculture
3,684
G - Geography, Anthropology, Recreation
3,412
D - World History
3,324
N - Fine Arts
2,412
Z - Library Science
1,035
C - Historical Sciences
701
M - Music
601
A - General Works
545
E - United States History
358
U - Military Science
210
V - Naval Science
47