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  1. By: Liebel, Robert
    Type: Article
    In: Entomologische Nachrichten
    Volume: 15
    Date: 1889
    Page Range: 282--286
    Publication Info: Berlin [etc.], R. Friedländer [etc.],
  2. By: Liebel, Robert
    Type: Article
    In: Entomologische Nachrichten
    Volume: 15
    Date: 1889
    Page Range: 297--307
    Publication Info: Berlin [etc.], R. Friedländer [etc.],
  3. By: Liebel, Robert
    Type: Article
    In: Entomologische Nachrichten
    Volume: 18
    Date: 1892
    Page Range: 257--287
    Publication Info: Berlin [etc.], R. Friedländer [etc.],