1657-6357 1657-6357 S1657-63572020000300109 10.25100/sye.v0i41.8950 Colombia Colombia 00 12 2020 00 12 2020 41 109 120

2006 2010 73 73 99-130 2014 2017 36 70 70 227-49 2015 298-377 1983 2014 2014 2015 83 83 265-72