000			00327pam a2200133a 44500
082			_aBTS _bMONO B-1404
100			_aField,L M
245	1		_aHIGH CURRENT ELECTRON GUNS
260			_a _b _c1946
300			_a9
500			_aBound With Bts Mono B-1401-03,1405-14 Lack No.1406,1412-13
964			_gCIRC
997			_aTR17774 C
999			_c404561 _d404561