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By: Sipaúba-Tavares L. H. - Favaro, Emerson Giuliano Palacio - Braga, Francisco Manoel de SouzaType: ArticleIn: Instituto Internacional de EcologiaVolume:Series:Issue:Date: 2002-11-01Page Range:Publication Info: Instituto Internacional de Ecologia 2002-11-01Subjects: Aquaculture biofilter Eichhornia crassipes impact Water hyacinth