1981-0431 1981-0431 S1981-04312018000100402 10.26512/lc.v24i0.20207 México México 00 00 2018 00 00 2018 24

1987 1987 1988 1986 1986 2009 2008 8 1 1 1-12 2012 1979 2009 2009 2009 1978 1973 2013 1984 2 3 3 1997 1985 1975 2008 2017 7 14 14 60-9 2013