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Imrad Patents, Extraction of Lead and Silver, Completed Specifications - Great Britain
Office of the Vice-Principal (The University of Melbourne), Imrad Patents, Extraction of Lead and Silver, Completed Specifications - Great Britain (April 1972-September 1976), [UMA-ITE-2014009800038]. University of Melbourne Archives, accessed 03/05/2026, https://archives.library.unimelb.edu.au/nodes/view/348724



