0185-2760 0185-2760 S0185-27602006000300049 Mexico 00 09 2006 00 09 2006 35 139 49 65

2001 1979 1984 1993 1996 1989 XXI 72 72 1991 39 3 3 29-53 1997 1998 1998 18 18 1982 1990 1998 1996 1994 8 38 38 2000 283 1 1 1997 1993 1999 2 2