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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Feldsine, John W. - Oliphant, L W
    Type: Article
    In: Raptor research
    Volume: 19
    Issue: 2-3
    Date: 1985
    Page Range: 60--67
    Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]