1992-8238 1992-8238 S1992-82382019000200014 Cuba 00 12 2019 00 12 2019 69

2018 135 2000 1998 2000 101 1999 11 1989 1996 89 1999 11 Ministerio de Educación 1993 1993 1998 II 2 2 2000 0 2006 2005 2007 42 2012 2003 2018 134 6 2002 1989 2 3 3