0186-7210 0186-7210 S0186-72102008000100055 10.24201/edu.v23i1.1303 Mexico 00 04 2008 00 04 2008 23 1 55 81

1998 35 7 7 1155-69 1996 62 4 4 492-511 1989 55 2 2 136-50 1997 2 3 3 199-219 1998 35 7 7 1996 1552 1552 89-96 1995 1466 1466 44-52 1994 1400 1400 63-70 2001 13 25 25 95-118 1991 21 2 2 163-82 1993 30 9 9 1485-500 1991 57 4 4 416-20 1997 63 1 1 95-106 1982 90 5 5 1035-53 1989 97 6 6 1497-504 1991 INEGI 1999 INEGI 2000 IMIP 1998 1968 82 2 2 175-97 1992 3 2 2 371-469 2005 Santa Fe, Nuevo México 1998 64 2 2 133-49 1994 60 3 3 319-32 1987 26 26 361-85 1989 55 3 3 426-55 1991 60 3 3 165-82 1996 1552 1552 120-5 2001 28 4 4 499-528