... those practised at that time in all other refining countries, we cannot help admiring the ingenuity and judgment of those old metallurgists who, aided only by their own observation, worked out a system which, while so well adapted to all the circumstances... A Rudimentary Treatise on the Metallurgy of Copper - Página 8 por Robert H. Lamborn - 1860 - 232 páginas Vista completa -
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