000			003130000a22001330004500
008			140223b1954 xxu||||| |||| 00| 0 eng d
041			_aENG
080			_aD65ea J4-;1
082			_aD65ea J4-;1
245			_aMarconi instruments 1954
260			_c1954
650			_aElectron Engineering
906			_aMarconi
999			_c155019 _d155019