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  1. By: Marshall, Nelson
    Type: Article
    In: The Wilson bulletin
    Volume: 54
    Issue: 1
    Date: 1942
    Page Range: 25--31
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-
  2. By: Moore, Johnes K - Marshall, Nelson
    Type: Article
    In: The veliger
    Volume: 10
    Date: 1967
    Page Range: 10--12
    Publication Info: Berkeley, CA, California Malacozoological Society,