Número de Clasificación
P - Language and Literature
2,214
D - World History
34
H - Social Science
10
N - Fine Arts
10
F - General American History
7
M - Music
5
B - Philosophy, Psychology, Religion
4
Z - Library Science
4
E - United States History
3
T - Technology
3
S - Agriculture
2
A - General Works
1
C - Historical Sciences
1
J - Political Science
1
L - Education
1
U - Military Science
1
V - Naval Science
1