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  1. By: Walther, Johannes, - Sterling, Susan Adelaide.
    Publication info: Boston, D.C. Heath, 1904 [c1899]
    Holding Institution: University of California Libraries
  2. By: Walther, Johannes,
    Publication info: [ s. l, s. n.], 1904
    Holding Institution: Smithsonian Libraries and Archives
  1. By: Walther, Johannes,
    Type: Article
    In: Mittheilungen aus der Zoologischen Station zu Neapal
    Volume: 8
    Date: 1888
    Page Range: 377--384
    Publication Info: Leipzig, Wilhelm Engelmann, 1879-1921