243

244

bachelorThesis
Published in 2023
Repository Repositorio Universidad Técnica Particular de Loja
248

other
Published in 1906
Repository Repositorio Biblioteca Digital CCE
259

bachelorThesis
Published in 2015
Repository Repositorio Pontificia Universidad Católica del Ecuador
260

bachelorThesis
Published in 2010
Repository Repositorio Universidad de Guayaquil