1
article
Published in 1988
Repository Repositorio Facultad Latinoamericana de Ciencias Sociales
2
article
by Llaguno Buzzetta, Patricia Paola; Molestina Jalil, Ana Maria; Salcedo Chicaiza, Vanessa Del Pilar; Rangel Luzuriaga, Ernesto
Published in 2009
Repository Repositorio Escuela Superior Politécnica del Litoral