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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Lauterborn, Robert
    Type: Article
    In: Zoologische Jahrbücher
    Volume: 7
    Date: 1893
    Page Range: 254--272
    Publication Info: Jena [Germany], G. Fischer,
  2. By: Lauterborn, Robert
    Type: Article
    In: Zoologischer Anzeiger
    Volume: 24
    Date: 1901
    Page Range: 50--55
    Publication Info: Jena VEB Gustav Fischer Verlag