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  1. By: Welsh, David Arthur - Chapman, Henry George
    Type: Article
    In: Journal and proceedings of the Royal Society of New South Wales
    Volume: 44
    Date: 1910
    Page Range: 320--333
    Publication Info: Sydney C. Potter, Acting. Govt. Printer 1877-
  2. By: Welsh, David Arthur
    Type: Article
    In: Journal and proceedings of the Royal Society of New South Wales
    Volume: 138
    Issue: 3-4
    Date: 2005-12
    Page Range: 85--92
    Publication Info: Sydney C. Potter, Acting. Govt. Printer 1877-