000 00230nam a2200109Ia 4500
082 _a621.313 RIS
100 _aRISSIK, H.
245 _aMERCURY: ARC CURRENT CONVERTORS
260 _bPITMAN
_c1963
300 _a434
942 _2ddc
_cB
999 _c39068
_d39068