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  1. By: Knutson, L - Abercrombie, J
    Type: Article
    In: Proceedings of the Entomological Society of Washington.
    Volume: 79
    Date: 1977
    Page Range: 111--125
    Publication info: Washington, etc. :Entomological Society of Washington
  2. By: Abercrombie, J
    Type: Article
    In: Journal of the Washington Academy of Sciences.
    Volume: 67
    Date: 1977
    Page Range: 155--156
    Publication info: Washington [etc.,Washington Academy of Sciences]