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Elementos de resistencia de materiales / by Timoshenko, S.

Resistencia de materiales / by Timoshenko, S.

Manual del constructor de máquinas /

Dissertation Abstracts International : B the Sciences and Engineering.

Agricultural Engineering.

Agrochemophysica.

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El libro de la ciudad de San Francisco de Quito hasta 1950-1951 /

Formulación de cargas metálicas en cubilates comunes por medio de progrmación lineal, en termino de minimizar costos / by Pappaterra, José

Electrificación de ferrocarriles / by Vidal Españo, Manuel

La problemática del transporte en América / by Moulton, Harold G.

Proceedings of the second Pan American scientid congress : engineering and scientic work of the United States Office of Public Roads and Rural Engineering / by Page, Logan Waller

Proceedings of the second Pan American scientid congress : public roads in the United States / by Pennybacker, J. E.

Proceedings of the second Pan American scientid congress : city streets and pavements / by Tillson, George W.

Proceedings of the second Pan American scientid congress : notas sobre vías de comunicación en la República del Ecuador / by Manrique, Francisco

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Proceedings of the second Pan American scientid congress : scientific work of the United States Navy / by Taylor, D. W.

Proceedings of the second Pan American scientid congress : the United States Coast Guard and its functions / by McAllister, C. A.

Proceedings of the second Pan American scientid congress : organization of the technical work of the United States Lighthouse Service and its coordination with other Government ser... by Putnam, George R.

Proceedings of the second Pan American scientid congress : municipal water supplies / by Whipple, George C.