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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Slack, R S - Slack, Cathie Baumgartner
    Type: Article
    In: Raptor research
    Volume: 14
    Issue: 2
    Date: 1980
    Page Range: 56--58
    Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]