The doctrine of gold and silver computations  In which is included, That of the Par of Money: The Proportion in Value between Gold and Silver; And the Valuation of Gold, Silver, and Parting Assays: With useful tables and copper-plates. By Thomas Snelling.

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Assaying - Tables

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The doctrine of gold and silver computations In which is included, That of the Par of Money: The Proportion in Value between Gold and Silver; And the Valuation of Gold, Silver, and Parting Assays: With useful tables and copper-plates. By Thomas Snelling.