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  1. By: King, Helen Dean
    Type: Article
    In: Proceedings of the Academy of Natural Sciences of Philadelphia.
    Volume: 59
    Date: 1907
    Page Range: 273--278
    Publication info: Philadelphia,Academy of Natural Sciences of Philadelphia
  2. By: King, Helen Dean
    Type: Article
    In: The Biological bulletin.
    Volume: 24
    Date: 1913-05-01
    Page Range: 377--391
    Publication info: Woods Hole, Mass. :Marine Biological Laboratory,