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  1. By: Schneiderman, Howard A - Ketchel, Melvin M - Williams, Carroll M
    Type: Article
    In: The Biological bulletin
    Volume: 105
    Date: 1953-08-01
    Page Range: 188--199
    Publication Info: Woods Hole, Mass Marine Biological Laboratory
  2. By: Ketchel, Melvin M - Williams, Carroll M
    Type: Article
    In: The Biological bulletin
    Volume: 109
    Date: 1955-08-01
    Page Range: 64--74
    Publication Info: Woods Hole, Mass Marine Biological Laboratory