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Front cover image for The assayer's guide; or, Practical directions to assayers, miners, and smelters, for the tests and assays, by heat and wet processes, of the ores of all the principal metals, of gold and silver coins and alloys, and of coal, &c

The assayer's guide; or, Practical directions to assayers, miners, and smelters, for the tests and assays, by heat and wet processes, of the ores of all the principal metals, of gold and silver coins and alloys, and of coal, &c

Oscar M. Lieber
Print Book, English, 1884
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A.C. Baird & Co., Philadelphia, 1884