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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Leuthold, R H - Bruinsma, O.
    Type: Article
    In: Psyche
    Volume: 84
    Date: 1977
    Page Range: 109--119
    Publication Info: Cambridge, Mass, Cambridge Entomological Club,
  2. By: Leuthold, R H
    Type: Article
    In: Psyche
    Volume: 75
    Issue: 4
    Date: 1968
    Page Range: 334--350
    Publication Info: Cambridge, Mass, Cambridge Entomological Club,
  3. By: Rickli, M - Leuthold, R H
    Type: Article
    In: Revue suisse de zoologie
    Volume: 94
    Date: 1987
    Page Range: 545--551
    Publication Info: Genève, Kundig [etc.],
  4. By: Leuthold, R H
    Type: Article
    In: Psyche
    Volume: 75
    Date: 1968
    Page Range: 233--248
    Publication Info: Cambridge, Mass, Cambridge Entomological Club,