Guzmán- Barrón Sobrevilla, César2018-04-092018-04-092014https://repositorio.pucp.edu.pe/index/handle/123456789/112687No presenta resumenapplication/pdfspainfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by/4.0info:eu-repo/semantics/otherhttps://purl.org/pe-repo/ocde/ford#5.05.00