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1999 1995 2002 1992 2007 2001 2007 24 24 473-88 2004 19 124 124 14-22 2004 1999 2001 20 20 139-74 2000 1985 2002 4 4 2004 2006 San Juan, Puerto Rico 2004 Toluca, Estado de México 2001 2 2 2 87-95 2005 Zapotlán el Grande, Jalisco, México 2002 2005 2000 2001 41 1 1 146-58 2004 16 1 1 1998 1994 2005 Oaxaca, México 2004 2007 1995 2004 2005 1999 1999 15 3 3 257-67 2003 108-14 2002 2004 1999 41-42 41-42 2000 1998 1992 Critical perspectives on rural change series, IV 19-43 2002 2001 2003 19 19 309-25 World Comission on Environment and Development WCED 1987