1390-1249 1390-1249 S1390-12492017000200055 10.17141/iconos.59.2017.2639 Cuba 00 09 2017 00 09 2017 59 55 77

2017 2009 135-71 2015 68 2015 2012 2016 2007 2007 2012 42 89-104 1989 2014 2002 153-62 2007 240-59 2003 175-210