Parr G, Davie O H, . (1959). Cathode- Ray Tube and its Applications. London: Chapman and Hall Ltd.
Parr G, Davie O H, . 1959. Cathode- Ray Tube and its Applications. London: Chapman and Hall Ltd.
Parr G, Davie O H, . Cathode- Ray Tube and its Applications. London: Chapman and Hall Ltd. 1959.