2218-3620 2218-3620 S2218-36202021000100307 Cuba Cuba 00 02 2021 00 02 2021 13 1 307 316

2015 2016 19 161-75 2017 Cuba. Ministerio de las Comunicaciones 2017 2017 2017 2020 18 3 3 404-9 2019 48 2018 2019 2019 38 1 1 2018 14 63 63 35-42 2017 2017 17 53 53 2016 1 1 1 28-44 2016 2010 36 141-9 2014 2 12 12