1684-1859 1684-1859 S1684-18592021000200007 Cuba Cuba Cuba Cuba 00 12 2021 00 12 2021 13 2

1 2018 40 6 6 1724-8 2 2018 32 2 2 3 2018 17 6 6 995-1004 4 Ministerio de Educación Superior 2018 5 2019 11 3 3 159-73 6 2017 31 2 2 1-11 7 2018 8 2018 10 1 1 28-39 9 2020 8 2 2 10 2014 6 1 1 11 2017 28 4 4 258-65 12 2017 31 1 1 61-77 13 2016 27 3 3 286-97 14 2020 A pr 22 1 1 70-6 15 2020 24 1 1 141-51 16 2017 9 2 2 151-62 17 2018 2 2 18 2018 10 2 2 33-44