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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Penrose, R L - Westcott, Richard L.
    Type: Article
    In: The Pan-Pacific entomologist
    Volume: 50
    Issue: 1
    Date: 1974
    Page Range: 72
    Publication Info: San Francisco, Pacific Coast Entomological Society,
  2. By: Penrose, R L
    Type: Article
    In: The Pan-Pacific entomologist
    Volume: 50
    Issue: 3
    Date: 1974
    Page Range: 248--284
    Publication Info: San Francisco, Pacific Coast Entomological Society,
  3. By: Penrose, R L
    Type: Article
    In: The Pan-Pacific entomologist
    Volume: 55
    Issue: 2
    Date: 1979
    Page Range: 159--160
    Publication Info: San Francisco, Pacific Coast Entomological Society,