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  1. By: Wichterman, Ralph
    Type: Article
    In: The Biological bulletin.
    Volume: 94
    Date: 1948-04-01
    Page Range: 113--127
    Publication info: Woods Hole, Mass. :Marine Biological Laboratory,
  2. By: Wichterman, Ralph - Figge, Frank H J
    Type: Article
    In: The Biological bulletin.
    Volume: 106
    Date: 1954-04-01
    Page Range: 253--263
    Publication info: Woods Hole, Mass. :Marine Biological Laboratory,