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  1. By: Zehnder, Geoffrey W. - Trumble, John T. - White, Walter R.
    Type: Article
    In: Proceedings of the Entomological Society of Washington
    Volume: 85
    Date: 1983
    Page Range: 564--574
    Publication Info: Washington, etc, Entomological Society of Washington,
  2. By: Davis, D. S. - White, Walter R.
    Type: Article
    In: Journal of Conchology
    Volume: 26
    Issue: 1
    Date: 1966-03
    Page Range: 33--38
    Publication Info: London D. Bogue