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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Stephen, W P
    Type: Article
    In: The Pan-Pacific entomologist
    Volume: 32
    Date: 1956
    Page Range: 95--101
    Publication Info: San Francisco Pacific Coast Entomological Society
  2. By: Stephen, W P
    Type: Article
    In: The University of Kansas science bulletin
    Volume: 36
    Issue: 6
    Date: 1954-06-01
    Page Range: 149--527
    Publication Info: [Lawrence], University of Kansas, [1926-1996]