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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Schelle, Ernst.
    Publication info: Stuttgart, E. Ulmer, 1907
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
  2. By: Schelle, Ernst.
    Publication info: Stuttgart, E. Ulmer, 1909
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library