00718nam0-22002771i-450-99000055693040332120001010000055693FED01000055693(Aleph)000055693FED0100005569320001010d--------km-y0itay50------baitay-------001yyMicrowave tubes and semiconductor devicesG. D. Sims , I. M. StephensonLondonBlackie196324 cm388 p.Sims,G. D.Stephenson,I. M.ITUNINARICAUNIMARCBK99000055693040332105 68 41DININDININUNINAING01