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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Nelson, Sigurd
    Type: Article
    In: The Journal of arachnology
    Volume: 10
    Issue: 3
    Date: 1982
    Page Range: 261--274
    Publication Info: [Lubbock, Tex.], American Arachnological Society,
  2. By: Nelson, Sigurd
    Type: Article
    In: The Journal of arachnology
    Volume: 12
    Issue: 3
    Date: 1984
    Page Range: 341--350
    Publication Info: [Lubbock, Tex.], American Arachnological Society,