2007-4026 2007-4026 S2007-40262016000200061 10.5154/r.inagbi.2016.10.005 Mexico Mexico 00 12 2016 00 12 2016 8 2 61 69

2009 1-31 2013 1989 24 2 2 98-104 2014 2015 2007 78 1067-73 Food and Agriculture Organization (FAO) 2011 Instituto Ecuatoriano de Normalización (INEN) 1988 2005 32 3 3 2001 9-29 2006 449-57 2003 23-40 1998 82 4 4 481-8 2010 2 1 1 5-11 1992 42 1 1 59-63 Statistical Analysis System (SAS Institute) 1994 2012 32 4 4 826-34 2003 86 1 1 59-65