Jorge E. Burbano Ruiz, Mcgraw Hill
$35.00
Cesar Augusto Montoya, Alvaro Nora
$17.17
Guerrero Hardy Alvaro, Funeda
$6.00
Gaceta Nº 38.408, R Graficas
$2.00
Jesus Mora Contreras, Ula
$7.00
Mcphee, Mcgrawhill
$72.60
A. Chiang y K. Wainwright, Mcgraw Hill
$46.00
Freedy J . Orlando S., Ucv
$13.49