SINGEWALD, Joseph T. The Titaniferous Iron Ores in the United States. 1913.

SINGEWALD, Joseph T.  The Titaniferous Iron Ores in the United States. Their composition and economic value.  Washington, Bureau of Mines, 1913.  4to.; 145 pp. y 16 láminas aparte.  Cubiertas originales. Lomera reforzada.

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• Geología
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