Jorge E. Burbano Ruiz, Mcgraw Hill
$35.00
F. Villasmil - M. Villasm, Libreria Europa
$1.00
Emilia Bermudez, Cpluz
$6.00
Gaceta Nº 6.209, Njr
$1.80
Gaceta N. 6.013, Rgraficas
$1.00
Toyn F. Villar V., Libra
$10.80
Gaceta Nº 38.433, Njr
$1.26