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  1. By: Williamson, Kenneth
    Type: Article
    In: The Ballarat Naturalist
    Date: 1978-10
    Page Range: 3--4
    Publication Info: [Ballarat, VIC] Field Naturalists' Club of Ballarat
  2. By: Clancey, P. A. (Phillip Alexander), - Williamson, Kenneth
    Type: Article
    In: Bulletin of the British Ornithologists' Club
    Volume: 81
    Date: 1961
    Page Range: 10--12
    Publication Info: London, British Ornithologists' Club, 1893-