0185-6286 0185-6286 S0185-62862020000200006 10.22134/trace.78.2020.730 México 00 00 2020 00 00 2020 78 123 153

1984 1997 1 261-393 1997 2 5-263 2011 2017 71 71 9-39 2012 2015 101-1 y 2 101-1 y 2 2018 39 153 153 293-343 2009 1985 1995 79-108 1969 8 8 279-311 2002 23-95 1973 2005 2003 2015 21 123-43 1960 2011 2004 1995 319-27 1975 11 395-446 1993 2004 1965 12 1969 1970 6 1970 1 1981 2 1987 261-475 1930 1975 9 1974 1944 1 1977