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  1. By: Spry, Alan
    Type: Article
    In: Journal and proceedings of the Royal Society of New South Wales
    Volume: 87
    Issue: 4
    Date: 1954-10-11
    Page Range: 129--136
    Publication Info: Sydney C. Potter, Acting. Govt. Printer 1877-
  2. By: Spry, Alan
    Type: Article
    In: Journal and proceedings of the Royal Society of New South Wales
    Volume: 89
    Issue: 4
    Date: 1956-09-10
    Page Range: 157--170
    Publication Info: Sydney C. Potter, Acting. Govt. Printer 1877-