2521-2281 2521-2281 S2521-22812022000100037 10.52379/mcs.v6i1.238 Paraguay Paraguay 00 04 2022 00 04 2022 6 1 37 42

1 Nations U 2 3 4 2004 59 2 2 93-104 5 2020 17 23 23 8968 6 2017 27 6 6 669 7 2018 16 88-98 8 2007 8 3 3 317-38 9 2013 48 126-38