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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Knowlton, George F., - Hall, L L
    Type: Article
    In: Entomological news
    Volume: 61
    Date: 1950
    Page Range: 41--42
    Publication Info: [Philadelphia], American Entomological Society, 1925-
  2. By: Knowlton, George F., - Hall, L L
    Type: Article
    In: Entomological news
    Volume: 60
    Date: 1949
    Page Range: 240--241
    Publication Info: [Philadelphia], American Entomological Society, 1925-