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  1. By: Von Heuglin, M T
    Type: Article
    In: Ibis
    Volume: 5
    Series: 2
    Issue: 2
    Date: 1869
    Page Range: 129--143
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,
  2. By: Von Heuglin, M T
    Type: Article
    In: Ibis
    Volume: 5
    Series: 2
    Issue: 1
    Date: 1869
    Page Range: 79--107
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,
  3. By: Von Heuglin, M T
    Type: Article
    In: Ibis
    Volume: 4
    Series: 2
    Issue: 3
    Date: 1868
    Page Range: 280--282
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,
  4. By: Von Heuglin, M T
    Type: Article
    In: Ibis
    Volume: 4
    Series: 2
    Issue: 2
    Date: 1868
    Page Range: 181--183
    Publication Info: [London], Published for the British Ornithologists' Union by Academic Press,