Freddy Suarez Figueroa, Romor
$7.13
Juan Eliezer Ruiz Blanco, Ediciones Libra
$14.74
H. Gutierrez-r.de la Vara, Mcgraw Hill
$50.00
Toyn F. Villar V., Libra
$10.80
W. Smith - J. Hashemi, Mcgraw Hill
$68.00
Jesus Mora Contreras, Ula
$7.00
Salvador Zubiran, Mcgraw Hill
$56.00
Oscar Pierre Tapia, Pierre Tapia
$6.00