0188-4999 0188-4999 S0188-49992006000400165 Mexico Mexico 00 12 2006 00 12 2006 22 4 165 172

CARB 1991 1989 23 864-80 1994 44 DGN 1993 2002 135 EPA 1994 INE 1994 2000 50 488-94 2003 37 2327-35 1984 Melbourne, Australia 715 PICCA 1990 22-31 PROAIRE 1996 1994 102 ^sSupplement 4 ^sSupplement 4 Supplement 4 3-12 SEMARNAP 1996 2003 37 395-401