000			00286pam a2200133a 44500
082			_a537.53 _bSp777e
100			_aSpreadbury, F. G.
245	1		_aELECTRONICS
260			_aLondon _bI. Pitman _c1947
300			_a698
650			_aElectronics
964			_gCIRC
997			_a16871 C
999			_c430512 _d430512