1
bachelorThesis
by Bungacho Gutiérrez, Nelly Rebeca; Bungacho Gutiérrez, Alegría del Pilar; Sampedro Toapanta, Wilson Eduardo
Published in 1999
Repository Repositorio Universidad Técnica Particular de Loja
2
masterThesis
Published in 2016
Repository Repositorio Universidad Técnica de Cotopaxi