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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Haig, Janet - Hopkins, T S - Scanland, Thomas Boyd,
    Type: Article
    In: Transactions of the San Diego Society of Natural History
    Volume: 16
    Date: 1970
    Page Range: 13--31
    Publication Info: [San Diego], The Society, 1905-1989
  2. By: Scanland, Thomas Boyd, - Hopkins, T S
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 91
    Date: 1978
    Page Range: 636--641
    Publication Info: Washington, Biological Society of Washington,