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  1. By: Morgan, J H - Pearce, P A
    Type: Article
    In: The Canadian field-naturalist
    Volume: 83
    Issue: 4
    Date: 1969
    Page Range: 394--395
    Publication Info: Ottawa Ottawa Field-Naturalists' Club
  2. By: Bundy, Graham - Morgan, J H
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 89
    Date: 1969
    Page Range: 139--144
    Publication Info: London, British Ornithologists' Club, 1893-
  3. By: Bundy, Graham - Morgan, J H
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 89
    Date: 1969
    Page Range: 151--159
    Publication Info: London, British Ornithologists' Club, 1893-