0185-1918 0185-1918 S0185-19182008000300013 10.22201/fcpys.2448492xe.2008.204.41983 Mexico 00 12 2008 00 12 2008 50 204 13 23

1985 1966 1999 1969 1981 1985 1981 1976 2003 1984 1974 1945 1971 1980 1999 5 5 1995