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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Runde, D E - Anderson, Stanley H.
    Type: Article
    In: Raptor research
    Volume: 20
    Issue: 1
    Date: 1986
    Page Range: 21--28
    Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]