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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Roberts, Radclyffe B
    Type: Article
    In: The University of Kansas science bulletin
    Volume: 49
    Date: 1972-02-16
    Page Range: 437--590
    Publication Info: [Lawrence], University of Kansas, [1926-1996]
  2. By: Fowler, Harold Gordon - Roberts, Radclyffe B
    Type: Article
    In: Journal of the New York Entomological Society
    Volume: 90
    Date: 1982
    Page Range: 247--251
    Publication Info: Lawrence, Kan Allen Press [etc.]