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  1. By: Rosa, Zulanira Meyer - Ungaretti, Ieti - Kremer, Lisete Maria - Alves da Silva, Sandra Maria - Callegaro, Vera Lucia Maröstica - Werner, Vera Regina
    Type: Article
    In: Acta Botanica Brasilica
    Date: 1987-07-01
    Subjects: bentos  fitoplâncton  Metafíton  Rio Grande do Sul  Sistemas lênticos ácidos