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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Ivins, G K - Halliwell, W H
    Type: Article
    In: Raptor research
    Volume: 8
    Issue: 3/4
    Date: 1974
    Page Range: 60--66
    Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]