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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Fowler, Harold Gordon - Whitford, Walter G
    Type: Article
    In: Journal of the New York Entomological Society
    Volume: 91
    Date: 1983
    Page Range: 328--332
    Publication Info: Lawrence, Kan Allen Press [etc.]
  2. By: Whitford, Walter G - Hutchison, Victor H
    Type: Article
    In: The Biological bulletin
    Volume: 124
    Date: 1963-06-01
    Page Range: 344--354
    Publication Info: Woods Hole, Mass Marine Biological Laboratory