2307-0420 2307-0420 S2307-04202020000300031 10.18004/sopaci.2020.diciembre.31 Paraguay 00 12 2020 00 12 2020 44 3 31 32

1 2003 13 116-7 2 2006 12 71-3 3 2004 59 453-4 4 2005 6th 5 2004 7th 839-40 6 2006 12 1933-6 7 2007 13 5659-61 8 2007 13 5659-61