000 00273nam a2200097Ia 4500
008 150310s9999 xx 000 0 und d
100 _aWALTER SEIFERT
245 _aGENERATORS - MOTORS-07 physical fundamentals & basic mechanical
250 _a2
260 _c1979
_bHEYDEN & SONS
999 _c23755
_d23755