0185-1667 0185-1667 S0185-16671999000100111 Mexico United Kingdom 00 03 1999 00 03 1999 59 227 111 141

Comisión Nacional del Agua 1998 89-112 1996 27-28 y 49 1990 1998 1996 35 35 18-20 1998 INEGI 1996 327 1995 227 National Research Council 1993 516 1990 St. Joseph, Michigan 148 OCDE 1986 144 1989 13 XIII XIII 18-29 1994 15 1992 14 14 1993 22 22 41-51 1987 11 131 131 62-8