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  1. A bibliography of the writings of Professor Mark Vernon Slingerland / by M. D. Leonard.
    By: Leonard, Mortimer Demarest,
    Publication info: Ithaca :Cornell University,1914.
    Contributed by: Smithsonian Libraries
    BHL Collections: Smithsonian Libraries
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  2. A List of the insects of New York : with a list of the spiders and certain other allied groups /
    By: Leonard, Mortimer Demarest,
    Publication info: Ithaca, N.Y. :Cornell University,1928.
    Contributed by: University of Connecticut Libraries (archive.org)
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