1665-8574 1665-8574 S1665-85742005000200065 Mexico 00 12 2005 00 12 2005 41 65 80

1994 29 1 1 101-62 1999 1993 1992 1993 2000 1986 2000 1987 1992 1992 1992 1988 1997 2003 1971 1990 1986 1992