0120-131X 0120-131X S0120-131X2020000200134 10.18566/cueteo.v47n108.a08 Chile 00 12 2020 00 12 2020 47 108 134 154

1994 2005 1982 2010 26 2013 2016 2019 1963 1981 1988 1992 1993 2006 2017 XLIII 168 168 2017 1963 1977 2019 679 679 2002 1967