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Books
Philosophical and Practical Essay on the Gold and Silver Min
Containing the Nature of the Ore, and the Manner of Working the Mines, the Qualities and Use of Quicksilver, the Cleansing and Refining These Metals : With M... »
Containing the Nature of the Ore, and the Manner of Working the Mines, the Qualities and Use of Quicksilver, the Cleansing and Refining These Metals : With M... »
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