228

229

233

book
Published in 2020
Repository Repositorio Universidad Andina Simón Bolivar
234

article
Published in 2012
Repository Repositorio Universidad Politécnica Salesiana
237

bachelorThesis
Published in 1954
Repository Repositorio Universidad de Cuenca
238

book
by SA
Published in 1892
Repository Repositorio Biblioteca Digital CCE
239