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  1. By: Willis, I L
    Type: Article
    In: Journal and proceedings of the Royal Society of New South Wales
    Volume: 115
    Issue: 1
    Date: 1982-08
    Page Range: 21--32
    Publication Info: Sydney C. Potter, Acting. Govt. Printer 1877-
  2. By: Willis, I L
    Type: Article
    In: Journal and proceedings of the Royal Society of New South Wales
    Volume: 117
    Issue: 3-4
    Date: 1984-12-30
    Page Range: 85--97
    Publication Info: Sydney C. Potter, Acting. Govt. Printer 1877-