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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Peterson, Bjorn
    Type: Article
    In: The Journal of Research on the Lepidoptera
    Volume: 1
    Issue: 2
    Date: 1963
    Page Range: 135--156
    Publication Info: Arcadia, Calif Lepidoptera Research Foundation
  2. By: Peterson, Bjorn
    Type: Article
    In: The Journal of Research on the Lepidoptera
    Volume: 1
    Issue: 4
    Date: 1963
    Page Range: 275--279
    Publication Info: Arcadia, Calif Lepidoptera Research Foundation