2448-718X 2448-718X S2448-718X2011000400841 Mexico Mexico 00 12 2011 00 12 2011 78 312 841 868

2006 9 5-16 1982 84 488-500 1972 1 323-38 1998 36 818-60 1994 59 331-47 1987 422 357-83 1968 76 169-217 2008 320 1605-9 2002 5 223-31 1983 65 363-73 1990 1986 68 217-23 1968 1971 18 1 1 105-15 2003 30 143-95 1988 41 61-74 1990 43 395-409 1999 2007 29 1 1 102-20 1997 2001 15 589-611 1978 8 107-16 1990 24 837-61 1999 31 91-104 1985 26 51-74 1996 50 1 1 105-10 1985 3 209-15 1989 27 721-46 1973 2 265-70 1988 2001 1987 77 234-9 1994 37 137-52 1989 1 1966 88 1 1 1-28 1993 15 1-43 1965 1985 67 232-8 2002 1982 72 923-55 1973 2 339-46 2002 16 657-83 1985 1985 38 1 1 1-13 1974 3 201-2