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  1. By: Armstrong, Margaret, - Thornber, J. J. (John James),
    Publication info: New York :Putnam,1915.
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: New York Botanical Garden | Women in Natural History
  2. By: Armstrong, Margaret, - Thornber, J. J. (John James),
    Publication info: New York and London,C.[!] P. Putnam;s sons,1915.
    Holding Institution: Internet Archive
    BHL Collections: Women in Natural History
  3. By: Armstrong, Margaret, - Thornber, J. J. (John James),
    Publication info: New York,C. [sic] P. Putnam's Sons,1915.
    Holding Institution: University of California Libraries (archive.org)
    BHL Collections: Women in Natural History
  4. By: Van Rensselaer, Schuyler, Mrs., - Armstrong, Margaret,
    Publication info: New York :Charles Scribner's Sons,1893.
    Holding Institution: Library of Congress
    BHL Collections: Women in Natural History