1996-3696 1996-3696 S1996-36962019000200001 10.18004/imt/20191421-2 Paraguay Paraguay 00 12 2019 00 12 2019 14 2 1 2 1 2006 6 91-9 2 2014 6 1076-89 3 2007 4 4 1989 8 75-8 5 2019 6 ofz384 6 2018 8 1500846