1870-5472 1870-5472 S1870-54722018000200191 Mexico 00 06 2018 00 06 2018 15 2 191 213

1994 313-26 2007 59-76 2004 19 124 124 14-22 2007 115-35 2004 2004 San José, Costa Rica 2002 18 18 49-60 2004 2006 2009 Santiago, Chile 2003 29 29 FAO 2005 2001 2012 2008 Lisbon, Portugal 2006 18 36 36 177-94 2003 2013 INCA Rural 2009 2004