1990-8644 1990-8644 S1990-86442020000200143 Ecuador 00 06 2020 00 06 2020 16 73 143 148

2009 Primera 2007 1 12 12 13-30 2007 2016 2002 2015 24 11-33 2009 2010 24 2 2 37-60 2007 Primera