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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Changnon, Harry E.
    Type: Article
    In: Bulletin
    Volume: 18
    Issue: 5
    Date: 1947
    Page Range: 3--3
    Publication Info: [Chicago, Ill.], The Museum, [1944-1966]
  2. By: Changnon, Harry E.
    Type: Article
    In: Bulletin
    Volume: 30
    Issue: 9
    Date: 1959
    Page Range: 4--5
    Publication Info: [Chicago, Ill.], The Museum, [1944-1966]