2077-2874 2077-2874 S2077-28742020000200238 Cuba Cuba 00 06 2020 00 06 2020 12 2 238 243

1 2016 2 3 3 2 2017 3 Ministerio de Educación Superior 2018 4 2013 5 3 3 5 2017 17 60 60