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  1. South American Naiades : a contribution to the knowledge of the freshwater mussels of South America /
    By: Ortmann, A. E. (Arnold Edward), - Carnegie Museum.
    Publication info: Pittsburgh :Published by the authority of the Board of Trustees of the Carnegie Institut,[1921]
    Holding Institution: Harold B. Lee Library (archive.org)
    Subjects: Fresh-water mussels  South America  Unionidae  
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