000			00461 a2200133 4500
082			_a621.38151 _bM178e
245	1		_aELECTRON TUBE LIFE FACTORS
260			_aN. J. _bEngineering Pub. _cc1959
300			_a173
500			_aLabel On T. P. : Trade Distributors : Reinhold Pub. Corp., N. Y. Chapman & Hall, London
650			_aElectron Tubes. I. U. S. Army Signal Research & Developments Laboratory, Fort Monmouth, N. J
964			_gCIRC
997			_a73468 s C
999			_c454054 _d454054