2215-2458 2215-2458 S2215-24582017000200001 10.15517/isucr.v18i38.32665 Costa Rica 00 12 2017 00 12 2017 18 38 1 14

1997 25 3 3 158-62 2012 2003 1963 1992 4 596-632 2008 41 1 1 89-106 1995 88 88 53-77 2010 1991 1996 2008