1405-3195 1405-3195 S1405-31952006000200229 Mexico 00 04 2006 00 04 2006 40 2 229 238

1995 2000 28 529-43 2003 31 375-87 2000 87 362-71 2003 150 355-67 1983 30 110-4 1994 6 6 1-8 1992 6 162-71 1989 46 59-79 1992 1981 1996 1996 9 1996 83 157 1992 6 159-78 1989 2 2004 32 875-91 1974 52 477-87 1979 28 297-305 1997 1980 2 1983 29 791-7 1994 22 53-63 2003 1971 1948 1 1 11-107 1953 1994 2001 67 2 2 141-238 2003 126 225-41 1984 33 1-12 1986 1-48 2000 12 41-6 1987 1978 2002 146 49-60 1994 269 4012-20 1993 42 63-8 1973 1988 18 640-3 1989 1984 33 16-22