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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Spencer, K A - Hawkins, B A
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 86
    Date: 1984
    Page Range: 664--668
    Publication Info: Washington, etc, Entomological Society of Washington,
  2. By: Gordh, Gordon - Hawkins, B A
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 84
    Date: 1982
    Page Range: 426--429
    Publication Info: Washington, etc, Entomological Society of Washington,