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  1. By: Schwerdtfeger, Hans
    Type: Article
    In: Journal and proceedings of the Royal Society of New South Wales
    Volume: 79
    Issue: 4
    Date: 1946-10-28
    Page Range: 176--189
    Publication Info: Sydney C. Potter, Acting. Govt. Printer 1877-
  2. By: Schwerdtfeger, Hans
    Type: Article
    In: Journal and proceedings of the Royal Society of New South Wales
    Volume: 76
    Issue: 3
    Date: 1943-05-26
    Page Range: 177--181
    Publication Info: Sydney C. Potter, Acting. Govt. Printer 1877-