1815-7696 1815-7696 S1815-76962019000300409 Cuba 00 09 2019 00 09 2019 17 3 409 420

2013 1 2018 28 51 51 58 2018 2016 45 2 2 337-55 2016 XVII XXVII XXVII 117-21 1981 2014 8 9 9 436-40 2018 36 1 1 203-19 2016 52 2 2 401-22 2016 1-19 Ministerio de Educación Superior 2016 2016 10 6 6 1126-31 1991