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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Beckemeyer, Roy L. - Charlton, Ralph E.
    Type: Article
    In: Entomological news
    Volume: 111
    Date: 2000
    Page Range: 84--96
    Publication Info: [Philadelphia], American Entomological Society, 1925-
  2. By: Beckemeyer, Roy L.
    Type: Article
    In: ZooKeys
    Volume: 130
    Date: 2011
    Page Range: 103-110
    Publication Info: Pensoft Publishers 2011