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

Subjects: “…MINERIA…”

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

Subjects: “…MINERIA…”

Proceedings of the second Pan American scientific congress : reseña geológica del departamento de Cundinamarca, cordillera oriental de los Andes colombianos / by Lleras Codazzi, Ricardo

Subjects: “…MINERIA…”

Proceedings of the second Pan American scientific congress : geología general de la República de El Salvador, en lo que se relaciona con la minería / by Fleury, Luis

Subjects: “…MINERIA…”

La minoridad argentina y la independencia económica / by Sommi, Luis V.

Subjects:

Proceedings of the second Pan American scientific congress : improvement in mining and metallurgy an aid to conservation / by Ricketts, L. D.

Subjects: “…MINERIA…”

Registro General de Minería / by Canobbio, Ana

Subjects:

Proceedings of the second Pan American scientific congress : the American Mining Congress and its work / by Scholz, Carl

Subjects: “…MINERIA…”

Capacidad e inhabilidades en minería / by Martínez, Víctor H

Subjects: “…MINERIA…”

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

Subjects: “…MINERIA…”

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

Subjects: “…MINERIA…”

Proceedings of the second Pan American scientific congress : placer-mining methods and operating costs / by Janin, Charles

Subjects: “…MINERIA…”

Proceedings of the second Pan American scientific congress : the relation of mining to the Pan American countries, with special reference to the mineral resources of Peru / by Pezet, Federico A.

Subjects: “…MINERIA…”

Temas de derecho ambiental : ambiente y minería / by Morales Lamberti, Alicia

Subjects:

La minería y el petróleo / by Craviotto, José A.

Subjects:

Proceedings of the second Pan American scientific congress : apuntes sobre la riqueza minerológica de Venezuela / by Jiménez, Germán

Subjects: “…MINERIA…”

Actividades mineras y la protección del medio ambiente / by Almuni, Carlos Alberto

Subjects: “…MINERIA…”

Proceedings of the second Pan American scientific congress : leyes mineras de cada país y modificaciones que pueden ser hechas para favorecer la explotación de los recursos mineral... by Sánchez, Jil F.

Subjects: “…MINERIA…”

Derechos reales en minería / by Martínez, Víctor H.

Subjects:

Ordenanza Hulleca : Régimen especial de la minería del Carbón.

Subjects: