1659-4266

1659-4266

S1659-42662018000200362

10.22458/urj.v10i2.1988

Costa Rica

00 12 2018

00 12 2018

10 2 362 367

2012

2006 8th

2008

2006 19

744-7

2003 2

519-878

2011 2

333-42

2008 31 2 2

169-74

1941

2009

1997 666,

2011 27

78-83

2006 54 1 1

59-63

MAG (Ministerio de Agricultura y Ganadería 1991

2004

2013 25 11 11

1-6

2014

2007 109 5 5

493-7

2015

1968

1992