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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Hallama, Emil
    Type: Article
    In: Entomologische Nachrichten
    Volume: 13
    Date: 1887
    Page Range: 255--256
    Publication Info: Berlin [etc.], R. Friedländer [etc.],
  2. By: Hallama, Emil
    Type: Article
    In: Entomologische Nachrichten
    Volume: 9
    Date: 1883
    Page Range: 200--201
    Publication Info: Berlin [etc.], R. Friedländer [etc.],