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By: Burgess, Neil D. - De Klerk, Helen - Fjeldså, Jon - Crowe, Tim - Rahbek, CarstenType: ArticleIn: Bulletin of the African Bird ClubVolume: 4Series:Issue: 2Date: 1997-09Page Range: 93--98Publication Info: Cambridge, African Bird Club, 1994-Subjects:
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By: Crowe, TimType: ArticleIn: Annals of the South African Museum. Annale van die Suid-Afrikaanse MuseumVolume: 76Series:Issue:Date: 1978Page Range: 43--136Publication Info: Cape Town, South African Museum, 1898-2004Subjects:
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By: Crowe, TimType: ArticleIn: Bulletin of the British Ornithologists' ClubVolume: 113Series:Issue:Date: 1993Page Range: 191--191Publication Info: London, British Ornithologists' Club, 1893-Subjects: