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By: Manetta, G. I. - Benedito-Cecilio, Evanilde, - Martinelli, M.Type: ArticleIn: Instituto Internacional de EcologiaVolume:Series:Issue:Date: 2003-05-01Page Range:Publication Info: Instituto Internacional de Ecologia 2003-05-01Subjects: Baía River energy source Fishes stable isotope trophic position