1665-1324 1665-1324 S1665-13242007000200161 México 00 12 2007 00 12 2007 9 18 161 178

1968 2006 5-62 1998 1990 1988 1988 3 2 2 241-63 1997 105-45 1997 2003 1995 1987 20 20 337-49 2003 9-30 2001 189-98 2005