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  1. By: Dreistadt, Steve H - Hagen, Kenneth S.‏ (Kenneth Sverre),‏ ‎
    Type: Article
    In: The Pan-Pacific entomologist
    Volume: 70
    Issue: 3
    Date: 1994
    Page Range: 240--252
    Publication Info: San Francisco, Pacific Coast Entomological Society,
  2. By: Dreistadt, Steve H - Hagen, Kenneth S.‏ (Kenneth Sverre),‏ ‎ - Bezark, Larry G
    Type: Article
    In: The Pan-Pacific entomologist
    Volume: 71
    Issue: 2
    Date: 1995
    Page Range: 135--136
    Publication Info: San Francisco, Pacific Coast Entomological Society,