Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)Ruiz Serna, Lorena2021-11-102021-11-102014-08-03http://repositorio.uan.edu.co/handle/123456789/5400contentsapplication/pdfspaAcceso abiertoinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2