2007-4018 2007-4018 S2007-40182007000200109 Mexico Mexico 00 12 2007 00 12 2007 13 2 109 113

1999 63 1222-8 2006 35 1599-607 2004 68 1935-44 1986 383-409 2001 65 1272-9 1991 23 799-805 2004 494 2004 68 2023-30 INSTITUTO NACIONAL DE GEOGRAFÍA E INFORMÁTICA (INEGI) 2005 688 1988 11th 564-607 1993 57 3-30 2003 67 1732-9 2003 67 1823-30 2006 70 279-86 2004 68 809-16 1999 63 1326-34 1982 539-79 1982 2nd 2003 67 1620-8 2000 64 1623-30 1996 161 9-20 2006 70 287-96 SAS INSTITUTE 2003 1996 60 1102-9 2005 97 772-82 2000 64 681-9 1990 11 213-33 2005 2 2 2 78-83 2003 67 335-43 2004 68 612-9