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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Betz, B. W.
    Type: Article
    In: Entomological news
    Volume: 94
    Date: 1983
    Page Range: 152--158
    Publication Info: [Philadelphia], American Entomological Society, 1925-
  2. By: Betz, B. W.
    Type: Article
    In: Psyche
    Volume: 90
    Date: 1983
    Page Range: 97--117
    Publication Info: Cambridge, Mass, Cambridge Entomological Club,