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  1. By: Wyatt, C W - Hartlaub, Gustav, - De Selys‐longchamps, The Baron M‐e - Crowley., P
    Type: Article
    In: Ibis
    Volume: 1
    Series: 8
    Issue: 2
    Date: 1901
    Page Range: 347--353
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,