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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Dennis, Roger L. H. - Williams, W. Robert
    Type: Article
    In: Journal of the Lepidopterists' Society
    Volume: 41
    Date: 1987
    Page Range: 45--64
    Publication Info: [New Haven, Conn.] Lepidopterists' Society 1959-
  2. By: Dennis, Roger L. H. - Porter, J. Mark - Williams, W. Robert
    Type: Article
    In: Nota lepidopterologica
    Volume: 7
    Date: 1984
    Page Range: 199--219
    Publication Info: Bonn,