000 00294nam a2200121Ia 4500
008 230222s9999 xx 000 0 und d
082 _a621.319
100 _aErich Uhlmann
245 0 _aPower Transmission By Direct Current
250 _a1
260 _bSpringer, New Delhi
_c2010
942 _cBK
999 _c20322
_d20322