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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Steadman, David W. - Olson, Storrs L. - Barber, John C. - Meister, C A - Melville, M E
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 100
    Date: 1980
    Page Range: 155--158
    Publication Info: London, British Ornithologists' Club, 1893-