0188-4999 0188-4999 S0188-49992005000200083 Chile Chile 00 06 2005 00 06 2005 21 2 83 89

APHA AWWA WPCF 1992 2003 56 6-19 1991 517-27 1999 2 15-8 2000 65 183-9 1996 53-68 1987 6 344-8 1992 26 87-93 1995 31 7-22 1995 14 1529-41 1995 96 43-8 1993 2 1993 ^s2 ^s2 2 1247-56 2001 4 10-7 2003 54 74-86 1995 78 117-25 2003 54 139-50