%0 conference lecture %@ %A Windmoeller, D.,Pereira Nunes, S.,Boeddeker, K. W. %D 1994 %J 6.° Coloquio Internacional de Macromoleculas (6th International Colloquium on Macromolecules) %N %P %T Pertraction of carbonic acids through ion exchange polymeric membranes %U %X