000			00517pam a2200169a 44500
082			_a621.38151 _bG337p
100			_aGewartowski, James W.
245	1		_aPRINCIPLES OF ELECTRON TUBES _cINCLUDING GRID-CONTROLLED TUBES, MICROWAVE TUBES AND GAS TUBES
260			_aPrinceton, N. Y. _bVan Nostrand _cc1965
300			_axvi,655
440			_aBell Telephone Laboratories Series _v
500			_aIncludes Bibliographies
650			_aElectron Tubes
700			_aWatson, H. A.
964			_gCIRC
997			_a78163 s C
999			_c436488 _d436488