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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Walls, Jerry G.
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 81
    Date: 1968
    Page Range: 413--418
    Publication Info: Washington, Biological Society of Washington,
  2. By: Walls, Jerry G.
    Type: Article
    In: Quarterly journal of the Florida Academy of Sciences
    Volume: 35
    Date: 1973
    Page Range: 109--112
    Publication Info: Gainesville, Florida Academy of Sciences,
  3. By: Walls, Jerry G.
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 84
    Date: 1971
    Page Range: 449--458
    Publication Info: Washington, Biological Society of Washington,