0186-7210 0186-7210 S0186-72102013000300545 10.24201/edu.v28i3.1447 Mexico 00 12 2013 00 12 2013 28 3 545 591

2010 11 21 21 43-79 2003 53 53 48-56 2005 2000 37 3 3 533-55 2007 52 52 78-108 2010 31-86 1998 28 28 419-44 INEGI 1990 INEGI 1999 INEGI 2000 INEGI 2004 INEGI 2009 INEGI 2010 2011 2008 42 8 8 1187-204 1996 49 49 137-50 2010 2007 33 33 51-67 2008 Alcalá de Henares 2007 7 25 25 241-66 1996 106 437 437 1019-36 Sedesol Conapo INEGI 2007 2010 127-71 2010 47 10 10 2027-50 1988 25 25 1-20