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  1. Aquatic surveys and assessment within the Middle Powder River watershed /
    By: Stagliano, David M. - Montana Natural Heritage Program. - Montana.
    Publication info: [Helena, MT : Montana Natural Heritage Program,2006].
    Contributed by: Montana State Library (archive.org)
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  2. Plant species of concern and plant associations of Powder River county, Montana /
    By: Heidel, Bonnie L. - Crispin, Susan. - Jean, Catherine. - Montana Natural Heritage Program. - Montana.
    Publication info: Helena, Mont. :Montana Natural Heritage Program,c2002.
    Contributed by: Montana State Library (archive.org)
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