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  1. By: Wagner, W D - Mccrary, M D - Mckernan, R L - Schreiber, Ralph W.
    Type: Article
    In: The journal of raptor research.
    Volume: 22
    Issue: 1
    Date: 1988
    Page Range: 32--33
    Publication info: Hastings, Minn. :Raptor Research Foundation,©1987-