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  1. By: Gilbertson, Lance H - Radke, William R
    Type: Article
    In: American malacological bulletin
    Volume: 21
    Date: 2006
    Page Range: 17--22
    Publication Info: [Hattiesburg, Miss.?], [American Malacological Union], 1983-
  2. By: Manley, Donald G - Radke, William R
    Type: Article
    In: The Pan-Pacific entomologist
    Volume: 78
    Issue: 4
    Date: 2002
    Page Range: 230--234
    Publication Info: San Francisco, Pacific Coast Entomological Society,