000			00366pam a2200133a 44500
082			_aBTS _bMONO B-1039
100			_aSamuel,A L
245	1		_aEXTENDING THE FREQUENCY RANGE OF THE NEGATIVE GRID TUBE
260			_a _b _c1937
300			_a32
500			_aBound With Bts Mono B-1031-1038, 1040-1059, Lack No. 1032-33,41,47
964			_gCIRC
997			_aTR17420 C
999			_c401650 _d401650