1409-4258 1409-4258 S1409-42582020000400033 10.15359/ree.24-s.9 Costa Rica Costa Rica Costa Rica 00 12 2020 00 12 2020 24 33 36

2020 24 1 1 1-14 2020 6 1 1 14-26 2020 28 28 237-62