2550-6722 2550-6722 S2550-67222019000300057 10.37135/chk.002.09.05 Ecuador Ecuador Spain 00 12 2019 00 12 2019 9 57 71

2011 1992 2011 283-315 2012 8 1 1 123-49 1989 2009 1976 84 77-101 2012 5 1 1 50-67 1992 2002 8 2 2 159-65 Instituto Nacional de Estadítica 2019 1968 XXIV 1 1 2007 27 1-4 1995 7 41-60 2012 17 3 3 613-9 2001 3 2 2 197-212 2007 2009 849 55-64 2012 . 53-97 1938 2003 9 123-57 1995 259-87 2016 Mendoza, Argentina 1997 54 2 2 413-45