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Credit
Republic of Uruguay, International Exhibition of Mining & Metallurgy, Crystal Palace, London, 1890. Part I. Origin of the auriferous region of Tacuarembó : its analogy and concordance with others on the American continent / by Clemente Barrial Posada. Public Domain Mark. Source: Wellcome Collection.
Provider
This material has been provided by The Royal College of Surgeons of England. The original may be consulted at The Royal College of Surgeons of England.