70 Years of radio tubes and valves / por John W. Stokes
Maquinas : una historia ilustrada / Sigvard Strandh
Aviation : an historical survey from its origins to the end of the World War II / Science Museum, ; por Charles Harvard Gibbs-Smith
Mercedes-Benz : 100 ans de progrès automobile / Automobiles d' exception; dir. Arnaud de Fouchier, trad. Michel Renou, adapt. francesa. Antoine Prunet