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  1. By: Rietsch, M Max
    Type: Article
    In: The Annals and magazine of natural history; zoology, botany, and geology
    Volume: 7
    Series: 5
    Date: 1881
    Page Range: 426--428
    Publication Info: London Taylor and Francis, Ltd
  2. By: Rietsch, M Max
    Type: Article
    In: The Annals and magazine of natural history; zoology, botany, and geology
    Volume: 7
    Series: 5
    Date: 1881
    Page Range: 493--495
    Publication Info: London Taylor and Francis, Ltd