1405-2768 1405-2768 S1405-27682006000100061 Mexico 00 00 2006 00 00 2006 21 61 74

1994 253 1983 187 1994 583 1993 841 1998 1996 424 1973 587 1964 385 1989 398 1995 39 46-7 2004 49 239-43 1980 1033 1976 1997 1999 7 39 39 22 1996 54 55-8 1997 858 1985 1247 1995 824 2004 95 421-4 1985 14 269-72 1999 944 2002 81 117-20 1978 432 2003 123 593-8 1999 55-56 54-60 1999 7 39 39 30-5 1988 875