1727-8120 1727-8120 S1727-81202019000200389 Cuba 00 08 2019 00 08 2019 19 2 389 404

1989 2012 2012 26 4 4 2006 22 3 3 2014 58 58 2017 12 1 1 2017 0 24 24 7 1996 2015 13 2 2 2016 30 1 1 2016 30 1 1 2018 20 1 1 2017 31 2 2 Ministerio de Educación Superior 2004