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  1. By: Forrest, Helen, zoologist. - Hadley, Charles Elmer,
    Publication info: 1949
    Holding Institution: American Museum of Natural History Library
  1. By: Hadley, Charles Elmer, - Castle, Ruth Marion
    Type: Article
    In: The Biological bulletin
    Volume: 78
    Date: 1940-04-01
    Page Range: 338--348
    Publication Info: Woods Hole, Mass Marine Biological Laboratory