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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Root, Walter S
    Type: Article
    In: The Biological bulletin
    Volume: 59
    Date: 1930-08-01
    Page Range: 48--62
    Publication Info: Woods Hole, Mass Marine Biological Laboratory
  2. By: Haywood, Charlotte - Root, Walter S
    Type: Article
    In: The Biological bulletin
    Volume: 59
    Date: 1930-08-01
    Page Range: 63--70
    Publication Info: Woods Hole, Mass Marine Biological Laboratory