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  1. 1
    Relation of periphyton and benthic invertebrate communities to environmental factors and land use at selected sites in part of the upper Mississippi River basin, 1996-98 /
    Subjects: “...Water quality biological assessment Mississippi River Watershed....”
    Government Document Book
  2. 2
    Relation of periphyton and benthic invertebrate communities to environmental factors and land use at selected sites in part of the upper Mississippi River basin, 1996-98 /
    Subjects: “...Freshwater invertebrates Mississippi River Watershed....”
    Get full text
    Government Document eBook
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