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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Johnson, Ned K - Zink, Robert M. - Barrowclough, George F. - Marten, Jill A
    Type: Article
    In: The Wilson bulletin
    Volume: 96
    Issue: 4
    Date: 1984
    Page Range: 543--560
    Publication Info: Columbus, Ohio, Wilson Ornithological Society, 1894-