Legislación obrera e industrial / by Espejo de Hinojosa, Ricardo

Proceedings of second Pan American scientific congress : conservation in its relation to industrial evolution / by Hess, Ralph Henry

Proceedings of second Pan American scientific congress : conservación de las plantas industriales / by Piñol Batres, Rafael

Subjects:

Proceedings of the second Pan American scientific congress : cooperation between public schools and organizations of employers and employees in making and executing plans for indus... by Williams, Arthur

Proceedings of the second Pan American scientific congress : the need of an industrial education in an industrial democracy / by Dewey, John

Proceedings of the second Pan American scientific congress : readjustment in elementary and secondary schools in response to changing industrial and social needs / by Harvey, L. D.

Proceeding of the second Pan American scientic congress : cooperative work in industrial plants in connection with engineering education / by Reber, Louis E.

Proceeding of the second Pan American scientic congress : industrial education and the uses of the cinematograph in public instruction / by Holley, Francis

Proceedings of the second Pan American scientific congress : national state, and local support of industrial education / by Snedden, David

Proceedings of the second Pan American scientific congress : the place of industrial education in a system of public schools of a self-governing people / by Davenport, E.

Proceedings of the second Pan American scientific congress : to what extent may college courses in engineering be profitably supplemented by practical work in the shop? - to what e... by Hamerschlag, Arthur A.

Subjects: “…INGENIERIA-PLANTAS INDUSTRIALES…”

Proceedings of the second Pan American scientific congress : Qué amplitud puede tener en los cursos escolares de ingeniería una provechosa práctica suplementaria en los establecimientos industriales? / by Sotomayor, Justiniano

Subjects: “…INGENIERIA-ESTABLECIMIENTOS INDUSTRIALES…”

Proceedings of the second Pan American scientific congress : Cuál deberá ser el lugar de la instrucción industrial en el sistema escolar de las Repúblicas hispano-americanas? - Deb... by Bolet, Julio César

Subjects:

Proceedings of the second Pan American scientific congress : Cuál debería ser el lugar de la instrucción industrial en el sistema de las Repúblicas Americanas? - Debería ser consid... by Samonati, Alfredo

Proceedings of the second Pan American scientific congress : Cuál deberá ser el lugar de la instrucción industrial en el sistema escolar de la repúblicas panamericanas? / by Cabezas, Joaquín

Proceedings of the second Pan American scientific congress : Cuál deberá ser el lugar de la instrucción industrial en el sistema escolar de las Repúblicas Americanas? / by Mettewie, Henry

Proceedings of the second Pan American scientific congress : industrial education for Latin America / by Everley, Harold E.

Proceedings of the second Pan American scientid congress : industrial applications / by Torchio, Philip

Proceedings of the second Pan American scientific congress : explosives for use in industrial and commercial developments / by Munroe, Charles E.

Proceedings of the second Pan American scientific congress : puntos de vista relativas al desarrollo industrial y comercial de la República Dominicana / by Velázquez, Federico