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  1. By: Field, G. D. (Geoffrey Dingley)
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 99
    Date: 1979
    Page Range: 57--59
    Publication Info: London, British Ornithologists' Club, 1893-
  2. By: Field, G. D. (Geoffrey Dingley)
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 99
    Date: 1979
    Page Range: 42--44
    Publication Info: London, British Ornithologists' Club, 1893-
  3. By: Field, G. D. (Geoffrey Dingley) - Owen, D F
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 89
    Date: 1969
    Page Range: 94--94
    Publication Info: London, British Ornithologists' Club, 1893-