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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Packard, Charles
    Type: Article
    In: The Biological bulletin
    Volume: 35
    Date: 1918-07-01
    Page Range: 50--70
    Publication Info: Woods Hole, Mass Marine Biological Laboratory
  2. By: Packard, Charles
    Type: Article
    In: The Biological bulletin
    Volume: 46
    Date: 1924-04-01
    Page Range: 165--177
    Publication Info: Woods Hole, Mass Marine Biological Laboratory