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  1. By: Fresenius, Georg,
    Publication info: Frankfurt am Main,1834
    Holding Institution: New York Botanical Garden, LuEsther T. Mertz Library
    BHL Collections: New York Botanical Garden
  2. By: Fresenius, Georg,
    Publication info: Frankfurt a.M. :Brönner,1858.
    Holding Institution: MBLWHOI Library
  3. By: Fresenius, Georg,
    Publication info: Frankfurt a. M. :Bei H. L. Brönner,1850-63.
    Holding Institution: University Library, University of Illinois Urbana Champaign
  4. By: Fresenius, Georg,
    Holding Institution: Missouri Botanical Garden, Peter H. Raven Library
    BHL Collections: Engelmann Papers, Missouri Botanical Garden