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  1. By: Ogilvie‐grant., W R - Shortridge., Mr G C
    Type: Article
    In: Ibis
    Volume: 4
    Series: 9
    Issue: 1
    Date: 1910
    Page Range: 156--191
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,
  2. By: Ogilvie‐grant, W R - Shortridge., Mr G C
    Type: Article
    In: Ibis
    Volume: 3
    Series: 9
    Issue: 4
    Date: 1909
    Page Range: 650--690
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,