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  1. By: Pratt, W L
    Type: Article
    In: The veliger
    Volume: 13
    Date: 1971
    Page Range: 342--343
    Publication Info: Berkeley, CA, California Malacozoological Society,
  2. By: Hershler, R - Pratt, W L
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 103
    Date: 1990
    Page Range: 279--299
    Publication Info: Washington Biological Society of Washington