por Immer, John R [autor] | Hevia Cangas, Fernando [traductor] | Immer, John R. Materials handling.
por Fitzgerald, A. E. (Arthur Eugene), 1909- [autor] | Kingsley, Charles, 1904-1994 [autor] | Kusko, Alexander [autor] | Valls, Enric [traductor] | Fitzgerald, A. E. (Arthur Eugene), 1909-. Electric machinery.
por Soldevilla García, Emilio [autor].