21
article
by Caicedo Arellano, Paola Edith; Velez Castelo, Maria Cristina; Auz Amador, Luis Andres; Romero Montoya, Maria Elena
Published in 2009
Repository Repositorio Escuela Superior Politécnica del Litoral
22
article
by Perez Chavarria, Cecilia; Tingo Chiliguano, Armando; Simbaña Jerez, Alejandra; Romero Montoya, Maria Elena
Published in 2009
Repository Repositorio Escuela Superior Politécnica del Litoral
23
article
Published in 2009
Repository Repositorio Escuela Superior Politécnica del Litoral