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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Ris, Hans
    Type: Article
    In: The Biological bulletin
    Volume: 96
    Date: 1949-02-01
    Page Range: 90--106
    Publication Info: Woods Hole, Mass Marine Biological Laboratory
  2. By: Ris, Hans
    Type: Article
    In: The Biological bulletin
    Volume: 85
    Date: 1943-10-01
    Page Range: 164--178
    Publication Info: Woods Hole, Mass Marine Biological Laboratory
  3. By: Ris, Hans
    Type: Article
    In: The Biological bulletin
    Volume: 89
    Date: 1945-12-01
    Page Range: 242--257
    Publication Info: Woods Hole, Mass Marine Biological Laboratory