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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Durrant, S D - Kelson, Keith R
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 60
    Date: 1947
    Page Range: 79--81
    Publication Info: Washington, Biological Society of Washington,
  2. By: Kelson, Keith R
    Type: Article
    In: Journal of the Washington Academy of Sciences
    Volume: 39
    Date: 1949
    Page Range: 417--419
    Publication Info: Washington [etc Washington Academy of Sciences]