0257-4314 0257-4314 S0257-43142022000200014 Cuba 00 08 2022 00 08 2022 41 2

2020 17 17 402-12 2021 57 93 93 2017 2021 57 94 94 2015 2020 12 4 4 2014 6ta 2011 2018 19-58 2021 39 1 1 2019 22 55 55 52-70 Ministerio de Educación Superior 2016 2018 39 39 37-50 2020 16 1290-301 2009 2002 2020 2021 21 74 74 111-23 2019 203-22 2007 4ta 2014 2001 2da