2307-0420 2307-0420 S2307-04202018000100038 10.18004/sopaci.2018.abril.38-40 Paraguay Paraguay Paraguay Paraguay 00 04 2018 00 04 2018 42 1 38 40

2018 38 309-28 2005 80 677-80 3 4 1996 100 2 2 164-70 5 2017 3 1 1 102-4 6 2017 1-5 7 2018