Please read BHL's Acknowledgment of Harmful Content
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  1. By: Van Syoc, Robert
    Type: Article
    In: Proceedings of the Biological Society of Washington
    Volume: 101
    Date: 1988
    Page Range: 832--837
    Publication Info: Washington, Biological Society of Washington,
  2. By: Carrison-Stone, Dana - Van Syoc, Robert - Williams, Gary C., - Simison, W. Brian (Warren Brian)
    Type: Article
    In: ZooKeys
    Volume: 270
    Date: 2013
    Page Range: 1-20
    Publication Info: Pensoft Publishers 2013