2222-145X 2222-145X S2222-145X2022000100085 10.18004/rcfacen.2022.13.1.85 Paraguay Paraguay 00 06 2022 00 06 2022 13 1 85 88

2008 4 183-209 183-209 1991 3 507-25 1991 131-46 2005 6 736