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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Ellis, David H. (David Harry) - Anderson, C. M. - Roundy, T B
    Type: Article
    In: Raptor research
    Volume: 15
    Issue: 2
    Date: 1981
    Page Range: 42--45
    Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]