0188-4999 0188-4999 S0188-49992006000200063 Mexico Mexico Mexico Mexico 00 06 2006 00 06 2006 22 2 63 73

1999 2 453 1993 27 2630-6 1995 1 317-27 1990 20 253-65 1970 1 27-44 1996 15 299-307 1996 110 715-9 1996 56 55-114 2002 21 457-91 1980 22 187-96 2004 89-109 1999 72 1975 8 107-12 1996 33 203-15 1997 2001 30 395-403 1992 116 187-94 1998 I 328 2002 6 57-63 1990 54 305-15 1998 10 263-74 2000 1 Vancouver, Canada 59-68 1996 92 213-7 2005 138 86-91 2005 165 195-209 1996 77-91 2003 28 587-617 2005 1-45 1984 9 189-201 2005 56 15-39 1999 2 51-8 PROFEPA 2003 2003 37 585-94 1997 186-99 1994 20 103-13 1996 25 212-9 SAS Institute Inc. 2002 1997 18 1994 249 1999 33 1940-5 USEPA 1986 3 1-16 USEPA 1998 2003 67 503-49 1998 27 169-73 2001 10 75-181 2005 23 293-302