000 00360nam a2200169Ia 4500
008 190201s9999 xx 000 0 und d
020 _a273007424
082 _a621
082 _b3133 S
100 _a"Say,M.G."
245 0 _aAlternating Current Mach
250 _aFourth
260 _aLondon
260 _bPitman
260 _c1936
300 _a"xi,542"
999 _c27988
_d27988