1
bachelorThesis
by Crespo Véliz, Ana Virginia; Dávila Chávez, Shirley Lissette; Tumbaco Marcillo, Jackeline Elizabeth
Published in 2010
Repository Repositorio Escuela Superior Politécnica del Litoral
2
masterThesis
Published in 2016
Repository Repositorio Universidad Técnica Particular de Loja