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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Hoffmann, Clarence H
    Type: Article
    In: Bulletin of the Brooklyn Entomological Society
    Volume: 35
    Series: new
    Date: 1940
    Page Range: 54--63
    Publication Info: Brooklyn, N.Y, The Society,
  2. By: Hoffmann, Clarence H
    Type: Article
    In: Bulletin of the Brooklyn Entomological Society
    Volume: 26
    Series: new
    Date: 1931
    Page Range: 71--74
    Publication Info: Brooklyn, N.Y, The Society,
  3. By: Hoffmann, Clarence H
    Type: Article
    In: Journal of the New York Entomological Society
    Volume: 44
    Date: 1936
    Page Range: 11--15
    Publication Info: Lawrence, Kan Allen Press [etc.]