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By: Vincent, JackType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 53Series:Issue:Date: 1933Page Range: 129--161Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Vincent, JackType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 106Series:Issue:Date: 1986Page Range: 124--126Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Vincent, JackType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 110Series:Issue:Date: 1990Page Range: 170--171Publication Info: London, British Ornithologists' Club, 1893-Subjects: