Bergsøe, Paul [1872-1963] - The Metallurgy and Technology of Gold and Platinum among the Pre-Columbian Indians

København, G.E.C. Gad, 1937. orig. wrappers. 24x15cm, 44,(5) pp. Inscribed by author on cover. Series: Danmarks naturvidenskabelige samfund, Ingeniørvidenskabelige skrifter A. nr. 44.. 4pp photoplates.. Minor wear. Some toning to cover edges. VG. ¶ Contents: Description of material from Atacames and La Tolita.-- Metallurgical examination of the material.--The first gold smelting carried out by the Indians.--Platinum in coherent form.--The economic side of the problem.--Tools.--Wire-drawing.--Welding.--The hardness of the metals.--Civilization and culture.

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