000 00435nam a2200157Ia 4500
008 191001s9999 xx 000 0 und d
020 _a0000000467
082 _a621.31
100 _aRissik H.
245 0 _aMercury Arc Current Convertors
260 _aLondon
_bPitman publishing
_c1957
536 _aManagement
650 _aArc Convertor Convertors Current Mercury
650 _aElectrical & Electronics Engineering
942 _cBK
999 _c314
_d314