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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Collins, R L
    Type: Article
    In: Journal of the Washington Academy of Sciences
    Volume: 23
    Date: 1933
    Page Range: 426--429
    Publication Info: Washington [etc Washington Academy of Sciences]
  2. By: Collins, R L
    Type: Article
    In: The Nautilus
    Volume: 47
    Date: 1934
    Page Range: 127--130
    Publication Info: Melbourne, Fla., etc American Malacologists, inc., etc