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By: Vogel, Christopher J. - Oswaldo, Maillard ZType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 127Series:Issue:Date: 2007Page Range: 233--236Publication Info: London, British Ornithologists' Club, 1893-Subjects:
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By: Vogel, Christopher J. - Sweet, P R - Hung, Le Manh - Hurley, Martha Maud,Type: ArticleIn: ForktailVolume: 19Series:Issue:Date: 2003Page Range: 21--30Publication Info: Oxford,Subjects: