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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Kummer, Paul,
    Publication info: Hannover, C. Rümpler, 1879
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
  2. By: Kummer, Paul,
    Publication info: Zerbst, Verlag von E. Luppe's Buchhandlung, 1871
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
  3. By: Kummer, Paul,
    Publication info: Hannover, C. Rmpler, 1878
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library