Die Lochkarte als Träger des Hollerith-Verfahrens
Berlin: DeHoMag, 1938. 12pp. Text illustrations. Original printed wrappers. On punch cards as the agent in the Hollerith process. More
Berlin: DeHoMag, 1938. 12pp. Text illustrations. Original printed wrappers. On punch cards as the agent in the Hollerith process. More
Berlin: DeHoMag, 1936. [12]pp. Text illustrations. Original printed wrappers. On the mechanical tools used in the Hollerith punch-card process. More