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  1. By: Rausch, Robert L - Schiller, Everett L.
    Type: Article
    In: Zoologica : scientific contributions of the New York Zoological Society
    Volume: 34
    Issue: 2
    Date: 1949-05-16
    Page Range: 5--8
    Publication Info: New York,
  2. By: Schiller, Everett L.
    Type: Article
    In: The Biological bulletin
    Volume: 106
    Date: 1954-02-01
    Page Range: 107--121
    Publication Info: Woods Hole, Mass Marine Biological Laboratory