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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Obrien, C W - Thompson, Richard T.
    Type: Article
    In: Entomological news
    Volume: 97
    Date: 1986
    Page Range: 198--200
    Publication Info: [Philadelphia], American Entomological Society, 1925-
  2. By: Obrien, C W - Wibmer, Guillermo J.
    Type: Article
    In: Entomological news
    Volume: 89
    Date: 1978
    Page Range: 89--92
    Publication Info: [Philadelphia], American Entomological Society, 1925-