00621nam a2200169Ia 4500003000900000008004100009020001900050040001600069080002600085110003400111245017300145260005600318300002300374650001900397650001600416650001900432IN-BaIIA211028s9999    xx            000 0 eng d  a9399-241-11601  cIIA Library  a(035)621.38bPDH-69:9  aPhilips Gloeilanapenfabrieken 0aPhillps data and Handbookbpt. 9, electron tubes-transmitting tubes for communication and triodes for R F heating, associated accessoriescPhilips Gloeilanapenfabrieken  aNetherlandbTechnical Publications Departmentc1969  a[various pagings.]  aElectron Tubes  aElectronics  aNASA Thesaurus