Carlos E. Weffe H., Avdt
$7.74
Jorge E. Burbano Ruiz, Mcgraw Hill
$35.00
Lind - Marchal - Wathen, Mcgraw Hill
$51.91
Nº 5390, Dabosan
$1.00
Emilio J. Urbina Mendoza, Funeda
$8.48
Gaceta Nº 38.596, Njr
$2.85
Alayon - Carballo - Daza, Ucab
$9.15
Francisco J. Gonzalez F., Fc Editorial
$30.00