2215-2636 2215-2636 S2215-26362018000100175 10.15517/rk.v42i1.33431 Costa Rica 00 06 2018 00 06 2018 42 1 175 187

2001 81 81 351-65 2010 2012 1987 1983 4ª 2010 2009 1991 17 34 34 173-92 1989 1988 1976 1952 1987 2003 91 91 163-8 1992 1991