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http://repositorio.unemi.edu.ec//handle/123456789/5917
http://repositorio.unemi.edu.ec//handle/123456789/5245
http://repositorio.unemi.edu.ec//handle/123456789/3053
http://repositorio.unemi.edu.ec//handle/123456789/4554
http://repositorio.unemi.edu.ec//handle/123456789/485
http://repositorio.unemi.edu.ec//handle/123456789/3243
http://repositorio.unemi.edu.ec//handle/123456789/4623
http://repositorio.unemi.edu.ec//handle/123456789/2345
http://repositorio.unemi.edu.ec//handle/123456789/982
http://repositorio.unemi.edu.ec//handle/123456789/4062