2307-0420 2307-0420 S2307-04202020000100026 10.18004/sopaci.2020.abril.26-27 Paraguay 00 04 2020 00 04 2020 44 1 26 27

1 2004 239 678-85 2 2003 138 427-33 3 1999 23 410-22 4 2004 351 1218-26 5 2001 11 9 9 1626-30 6 2008 1 141-68 7 1996 110 1909-18