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  1. By: Ingram, Collingwood
    Type: Article
    In: Ibis
    Volume: 3
    Series: 9
    Issue: 3
    Date: 1909
    Page Range: 422--469
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,
  2. By: Ingram, Collingwood
    Type: Article
    In: Ibis
    Volume: 2
    Series: 9
    Issue: 3
    Date: 1908
    Page Range: 458--480
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,
  3. By: Ingram, Collingwood
    Type: Article
    In: Ibis
    Volume: 2
    Series: 9
    Issue: 1
    Date: 1908
    Page Range: 129--169
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,
  4. By: Ingram, Collingwood
    Type: Article
    In: Ibis
    Volume: 3
    Series: 9
    Issue: 4
    Date: 1909
    Page Range: 713--715
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,
  5. By: Ingram, Collingwood
    Type: Article
    In: Ibis
    Volume: 1
    Series: 9
    Issue: 3
    Date: 1907
    Page Range: 387--415
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,
  6. By: Ingram, Collingwood
    Type: Article
    In: Ibis
    Volume: 2
    Series: 11
    Issue: 4
    Date: 1920
    Page Range: 856--880
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,
  7. By: Ingram, Collingwood
    Type: Article
    In: Ibis
    Volume: 1
    Series: 10
    Issue: 4
    Date: 1913
    Page Range: 545--550
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,
  8. By: Ingram, Collingwood
    Type: Article
    In: Ibis
    Volume: 1
    Series: 9
    Issue: 4
    Date: 1907
    Page Range: 574--578
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,