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Please read BHL's Acknowledgment of Harmful Content
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  1. By: Bibby, Colin J. (Colin Joseph), - Nevo, Adrian J. del.
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 111
    Date: 1991
    Page Range: 183--186
    Publication Info: London, British Ornithologists' Club, 1893-