P. Montoya - M. Ramirez, Mcgraw Hill
$12.00
Iris Gonzalez de Troconis, Funeda
$7.00
Jesus Rodriguez Lastra, Universidad Carabobo
$8.00
H. Koontz - H. Weihrich, Mcgraw Hill
$71.00
Tito Balza Santaella, Tito Balza Santaella
$5.00
Ezequiel Ander- Egg, Lumen
$8.70