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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Beaver, Ookeow. - Knutson, Lloyd, - Berg, Clifford O.
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 79
    Date: 1977
    Page Range: 326--337
    Publication Info: Washington, etc, Entomological Society of Washington,