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  1. On the fresh-water copepoda of the central and western United States of America /
    By: Sharpe, Richard Worthy,
    Publication info: 1893.
    Contributed by: University Library, University of Illinois Urbana Champaign
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  2. Science, a story of discovery and progress [by] Ira C. Davis [and] Richard W. Sharpe.
    By: Davis, Ira C. - Sharpe, Richard Worthy,
    Edition: New ed.
    Publication info: New York,H. Holt[1947]
    Contributed by: Internet Archive
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