1990-8644 1990-8644 S1990-86442022000400316 Ecuador 00 08 2022 00 08 2022 18 87 316 321

2014 7 5 5 68-84 2018 2016 24 82 82 1-28 2006 1965 2007 2018 25 25 215-32 1999 2006 2012 2009 1992 13 2 2 2014 5 4 4 775-85 2021 50 198 198 132-54 UNESCO 1995