1405-3195 1405-3195 S1405-31952007000100001 Mexico Mexico Mexico Mexico Ecuador 00 02 2007 00 02 2007 41 1 1 12

AOAC 1990 15 1018 2005 42-50 1986 36 137-48 1988 41 274-9 1993 95-104 1999 Primera 206 1982 562 2005 81-95 1992 82-99 1999 33 141-8 1988 4 252 1980 39 1981 36 3 3 155-68 1997 45-52 2002 40 193-205 2004 44 1348-54 1981 1-14 1990 204 1993 857-8 2005 69-80 2005 195-204 1992 47 91-102 1960 606-11 1984 31 SAS Institute Inc. 1996 Fourth 956 1996 2 622 1963 18 104-11 2001 232-7 2002 25 97-107 1994 16 1 1 27-31