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  1. The ferns and fern allies of the upper Susquehanna valley /
    By: Clute, Willard Nelson,
    Publication info: Binghamtom, N.Y. :W.N. Clute & Co.,1898.
    Contributed by: Mertz Library, The New York Botanical Garden
    Subjects: Filices  New York (State)  Pteridophyta  Susquehanna River Valley  
    BHL Collections: New York Botanical Garden
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