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  1. By: Charlton, Harry Hayward,
    Publication info: Philadelphia, 1921
    Holding Institution: University of California Libraries
  1. By: Charlton, Harry Hayward,
    Type: Article
    In: The Biological bulletin
    Volume: 33
    Date: 1917-11-01
    Page Range: 321--338
    Publication Info: Woods Hole, Mass Marine Biological Laboratory