000 00340nam a2200145Ia 4500
100 _aHellyer//H.W/ Sinclair/I.R
650 _aElectrical Engineering
942 _cRB
654 _aRadio And Television
245 _aRadio And Television
260 _bBulter Worth
_aLondon
_c1980
082 _a621.3
300 _a120
546 _aENGLISH
999 _c32339
_d32339