Traité de metallogénie : gîtes minéraux et métallìferes / by Launay, L. de

Subjects: “…GEOLOGIA ECONOMICA…”

Platinum-group elements: petrology, geochemistry, mineralogy by Mungall, James E.

Subjects: “…393 GEOLOGIA ECONOMICA…”

Consideraciones sobre la explotación de yacimientos argentinos / by Kittl, Erwin 1890-

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Proceedings of the second Pan American scientific congress : standard methods of sampling and analysis and standard samples / by Hillebrand, W.

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Proceedings of the second Pan American scientific congress : the coals of Brazil / by White, I. C.

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Proceedings of the second Pan American scientific congress : the mineral production of Latin America / by Roush, G. A.

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Proceedings of the second Pan American scientific congress : mining in Ecuador / by Mercer, J. W.

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Proceedings of the second Pan American scientific congress : drying oils produced in the Americas / by Gardner, Henry A.

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Proceedings of the second Pan American scientific congress : paint for Latin American countries / by Toch, Maximilian

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Proceedings of the second Pan American scientific congress : metallurgy of tin ores in Bolivia / by Hollister, Scoville E.

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Proceedings of the second Pan American scientific congress : chemical research as a directing aid in the efficient utilization of pine forests / by Herty, Charles H.

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Proceedings of the second Pan American scientific congress : the field for cyaniding in South America / by Megraw, Herbert A.

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Proceedings of the second Pan American scientific congress : concentración por flotación / by Fuchs, Federico G.

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Proceedings of the second Pan American scientific congress : a simple efficient, and economic filter, its application to the filtration of the yellow precipitate in phosphoric-acid... by Kellogg, E. H.

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Proceedings of the second Pan American scientific congress : saving of coal through the employment of better mining methods / by Haas, Frank

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Proceedings of the second Pan American scientific congress : recientes adelantos en la práctica metalúrgica en el Perú / by Fort, Michel

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Proceedings of the second Pan American scientific congress : standard methods for sampling and analyzing coal / by Fieldner, A. C.

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Proceedings of the second Pan American scientific congress : iron ores of the Americas / by Leith, C. K.

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Proceedings of the second Pan American scientific congress : datos para la historia de la minería en la República de Guatemala / by Lemus, Manuel

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Proceedings of the second Pan American scientific congress : mining, the pioneer of intimate commercial relations / by Sharpless, Frederick F.

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