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  1. The botanists of Philadelphia and their work.
    By: Harshberger, John William,
    Publication info: Philadelphia[T.C. Davis]1899
    Contributed by: Gerstein - University of Toronto (archive.org)
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  2. A text-book of mycology and plant pathology, by John W. Harshberger.
    By: Harshberger, John William,
    Publication info: Philadelphia,P. Blakiston's Son & Co.[c1917]
    Contributed by: Library of Congress
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