1990-8644 1990-8644 S1990-86442021000300099 Ecuador 00 06 2021 00 06 2021 17 80 99 106

2009 42 42 531-50 2008 39 5 5 775-86 2011 55 2 2 161-75 1986 1996 2015 69 6 6 11-4 2018 43 2 2 51-65 2003 20 2 2 107-29 2016 15 2 2 53-63 2001 9 5 5 1-6 2018 Real Academia Española 2001 22.a ed 2008 9 17 17 145-61 1986 56 4 4 411-36 2018 3 3 3 2013 1 2 2 104-12 2008 26 3 3 61-83