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  1. By: Earl, John Campbell - Hall, Norman Frederick
    Type: Article
    In: Journal and proceedings of the Royal Society of New South Wales
    Volume: 66
    Issue: 1
    Date: 1932
    Page Range: 157--166
    Publication Info: Sydney C. Potter, Acting. Govt. Printer 1877-
  2. By: Earl, John Campbell - Hall, Norman Frederick
    Type: Article
    In: Journal and proceedings of the Royal Society of New South Wales
    Volume: 66
    Issue: 2
    Date: 1933-03-31
    Page Range: 453--458
    Publication Info: Sydney C. Potter, Acting. Govt. Printer 1877-