1729-519X 1729-519X S1729-519X2018000400518 Cuba 00 08 2018 00 08 2018 17 4 518 526

1 2015 2 2014 116 116 3 2006 4 EcuRed 2012 5 2015 5 1 1 6 2014 116 116 7 2012 8 1952