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 : mining costs and selling prices of coal in the United States and Europe, with special reference to export trade / by Rice, George S.

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Proceedings of the second Pan American scientific congress : coal fields of the United States considered as sources of supply for the western hemisphere / by Campbell, Marius R.

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Proceedings of the second Pan American scientific congress : coal-dust firing in reverheratory furnaces / by Kuzell, Charles R.

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Ordenanza Hulleca : Régimen especial de la minería del Carbón.

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National laws - treaty establishing the european coal and steel community.

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En la búsqueda del hombre = in the search of the human being : a carbon tax in Argentina / by Santos, Silvia Georgina

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De huelgas, movilizaciones y otras acciones de los mineros del carbón de Coahuila / by Novelo, Víctoria

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Los salarios y la duración del trabajo en las minas de carbón /

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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 : standard methods for sampling and analyzing coal / by Fieldner, A. C.

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La communauté européenne du charbon et de l'acier / by Reuter, Paul

Subjects: “…COMUNIDAD EUROPEA DEL CARBON…”

Proceedings of second Pan American scientific congress : valuation of federal coal lands / by Parsons, Floyd W.

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Filosofía del derecho / by Carbone, M.

I microorganismi nell'industria / by Carbone, Domenico

La durée du travail dans les mines de charbon.

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Como resolver las disputas : diseño de sistemas para reducir los costos del conflicto / by Ury, William L.

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Transformación de sociedades comerciales : doctrina - legislación - jurisprudencia / by Carbone, Nicolás A.

Excepciones de transacción, conciliación y desistimiento del derecho / by Carbone, Carlos Alberto

Una tempestad / by Césaire, Aimé