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  1. By: Conwentz, Hugo,
    Publication info: Cambridge [England] :University Press,1909.
    Holding Institution: Harvard University Botany Libraries
  2. By: Göppert, Johann Heinrich Robert, - Conwentz, Hugo, - Menge, Anton - Naturforschende Gesellschaft, Danzig
    Publication info: DanzigCommissions-Verlag von W. Engelmann1883-1886
    Holding Institution: University of Toronto - Gerstein Science Information Centre
  3. By: Dahl, Friedrich, - Conwentz, Hugo,
    Publication info: Berlin :Gebr. Borntraeger,1912.
    Holding Institution: Smithsonian Libraries