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By: Newton, Edward - Gadow, Hans,Type: ArticleIn: Transactions of the Zoological Society of LondonVolume: 13Series:Issue:Date: 1893Page Range: 281--302Publication Info: [London], Published for the Zoological Society of London by Academic Press,Subjects:
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By: Newton, Alfred, - Newton, EdwardType: ArticleIn: IbisVolume: 6Series: 5Issue: 4Date: 1888Page Range: 474--476Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,Subjects: