Número de Clasificación
B - Philosophy, Psychology, Religion
58
A - General Works
43
D - World History
33
C - Historical Sciences
21
S - Agriculture
18
H - Social Science
9
M - Music
9
T - Technology
6
U - Military Science
3
E - United States History
2
K - Law
2
N - Fine Arts
1
P - Language and Literature
1
R - Medicine
1
Z - Library Science
1