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  1. The land and fresh water Mollusca in the vicinity of New Philadelphia : a contribution to the natural history of Tuscarawas Co., Ohio / by V. Sterki.
    By: Sterki, Victor,
    Publication info: New Philadelphia, Ohio :Beobachter Print,1894.
    Contributed by: Harvard University, MCZ, Ernst Mayr Library
    BHL Collections: Ernst Mayr Library of the MCZ, Harvard University
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