000 00317nam a2200133Ia 4500
008 220204s9999 xx 000 0 und d
082 _a621.3.025
_bSAY
100 _aSay, M G
245 0 _aAlternating current machines
250 _a4
260 _aLondon
_bELBS
_c1970
650 _aAlternating current
942 _cBK
999 _c26701
_d26701