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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Pitcher, E - Widener, Peter - Martin, S J
    Type: Article
    In: Raptor research
    Volume: 13
    Issue: 2
    Date: 1979
    Page Range: 39--40
    Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]