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  1. By: Bell, William J
    Type: Article
    In: The Biological bulletin.
    Volume: 137
    Date: 1969-10-01
    Page Range: 239--249
    Publication info: Woods Hole, Mass. :Marine Biological Laboratory,
  2. By: Barth, R H - Bell, William J
    Type: Article
    In: The Biological bulletin.
    Volume: 139
    Date: 1970-12-01
    Page Range: 447--460
    Publication info: Woods Hole, Mass. :Marine Biological Laboratory,