1870-3542 1870-3542 S1870-35422018000200169 Mexico 00 12 2018 00 12 2018 64 2 169 180

1 1996 2 2007 3 1977 4 1964 5 1975 6 1984 7 8 9 1985 10 1988 11 1990 12 2006 13 1991 14 1992 15 2005 1-23 16 1995 17 2002 197 185-227