E. de la Cruz - A. Rojas, Salesiana
$4.80
Magaly Perretti de Parada, Liber
$6.00
Jose Luis Cordeiro, Mcgraw Hill
$20.00
William I. Correa Suarez, Livrosca
$6.17
Hernando Grisanti A., Vadell Hermanos
$1.00
Luis Eduardo Mendoza, Vadell
$1.00
H. Gutierrez-r.de la Vara, Mcgraw Hill
$50.00