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  1. By: Mackay, Robin M
    Type: Article
    In: Journal and proceedings of the Royal Society of New South Wales
    Volume: 95
    Issue: 1
    Date: 1961-07-04
    Page Range: 17--21
    Publication Info: Sydney C. Potter, Acting. Govt. Printer 1877-
  2. By: Mackay, Robin M
    Type: Article
    In: Journal and proceedings of the Royal Society of New South Wales
    Volume: 97
    Issue: 3
    Date: 1964-04-21
    Page Range: 83--89
    Publication Info: Sydney C. Potter, Acting. Govt. Printer 1877-