Georgius Agricola (1494-1555), German physician, mineralogist and metallurgist, c1890. Agricola (christened Georg Bauer) was the author of De re metallica, an early treatise on mining and metallurgy which remained a standard text on the subject for the next 200 years. Basel, 1555). (Photo by Ann Ronan Pictures/Print Collector/Getty Images)
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January 29th, 2021
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