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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Gordh, Gordon - Hendrickson, R
    Type: Article
    In: Entomological news
    Volume: 87
    Date: 1976
    Page Range: 271--274
    Publication Info: [Philadelphia], American Entomological Society, 1925-
  2. By: Gordh, Gordon - Hendrickson, R
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 81
    Date: 1979
    Page Range: 666--684
    Publication Info: Washington, etc, Entomological Society of Washington,