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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Landwehr, Friedrich
    Type: Article
    In: Entomologische Nachrichten
    Volume: 12
    Date: 1886
    Page Range: 109--110
    Publication Info: Berlin [etc.], R. Friedländer [etc.],
  2. By: Landwehr, Friedrich
    Type: Article
    In: Entomologische Nachrichten
    Volume: 7
    Date: 1881
    Page Range: 280--281
    Publication Info: Berlin [etc.], R. Friedländer [etc.],