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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Pape, K L - Ogasawara, F X
    Type: Article
    In: Raptor research
    Volume: 12
    Issue: 1-2
    Date: 1978
    Page Range: 28--34
    Publication Info: Vermillion, S.D, Raptor Research Foundation, [1972-1986]