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  1. Bog-trotting for orchids, Grace Greylock Niles, with illustrations from nature.
    By: Niles, Grace Greylock.
    Publication info: New York,Putnam,1904.
    Contributed by: NCSU Libraries (archive.org)
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  2. Bog-trotting for orchids.
    By: Niles, Grace Greylock.
    Publication info: New York,Knickerbocker,1904.
    Contributed by: Mertz Library, The New York Botanical Garden
    BHL Collections: New York Botanical Garden
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