Tierra y escuela, el gran desafío / by Lasser, Tobías

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En lugar de feudalismo / by Villegas, Abelardo

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Navegaciones descubridoras en la costa austral de américa, de 1500 a 1516 / by Levillier, Roberto

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El problema del éxito o del fracaso de la acción de españa en américa / by Rodríguez Casado, Vicente

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Primer congreso iberoamericano de seguridad social : a donde va la previsión social en América / by Flores Alvarez, Marcos

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Problemas demográficos de américa central y de la región del caribe / by Leon, Alberto P.

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Proceedings of the second Pan American scientific congress : tribes of the Pacific coast of North America / by Kroeber, A. L.

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Proceedings of the second Pan American scientific congress : origin of the Indians of Central and South America - Lexicology of the gods of the Incas / by Caparó y Pérez, J. A.

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Proceedings of the second Pan American scientific congress : how to secure properly prepared instructors for colleges and universities in courses in domestic and foreign commerce / by Egbert, James C.

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Proceedings of the second Pan American scientific congress : the study of engineering education by the joint committee of the national engineering societies / by Mann, C. R.

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Procedings of the second Pan American scientific congress : commercial courses in the young men's Christian Association / by Wertheim, Edward L.

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Proceeding of the second Pan American scientic congress : methods of teaching chemical engineering / by Whitaker, M. C.

Subjects: “…INGENIERIA QUIMICA-TECNICAS-AMERICA…”

Proceedings of the second Pan American scientific congress : la actitud de los países americanos hacia el arbitraje internacional y el arreglo pacífico de las disputas internaciona... by Capella y Pons, Francisco

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Proceedings of the second Pan American scientific congress : is there an american public law that can be differentiated from that of other continents? / by Fowler, Robert Ludlow

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Proceedings of the second Pan American scientific congress : gobierno y responsabilidad / by Jiménez de Arechága, Justino E.

Subjects: “…RESPONSABILIDAD POLITICA-AMERICA…”

Proceedings of the second Pan American scientific congress : the international assimilation of law, its needs and, its possibilities from an American standpoint / by Wigmore, John H.

Subjects: “…DERECHO INTERNACIONAL-AMERICA…”

Proceedings of the second Pan American scientific congress : the role of America in the development of international law / by Rowe, L. S.

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Proceedings of the second Pan American scientific congress : problemas internacionales americanos / by Otero, Luis Alfredo

Subjects: “…DERECHO INTERNACIONAL-AMERICA…”

Proceedings of the second Pan American scientific congress : estudio del derecho internacional en los países americanos y medios por los cuales puede ser más efectivo / by Matos, José

Subjects: “…DERECHO INTERNACIONAL-AMERICA…”

Proceedings of the second Pan American scientific congress : actitud de los países americanos hacia el arbitraje internacional y el arreglo pacífico de las disputas internacionales... by Pérez-Verdía, Benito Javier

Subjects: “…ARBITRAJE INTERNACIONAL-AMERICA…”