000 002970000a22001210004500
245 _aIntroduction to the unified theory of electromagnetic machines
100 _aSay, M.G.
260 _aLondon
_bPitman
_c1971
300 _a198 p., ill.
080 _a621.313.8
_bS3
041 _aEN
942 _cBK
999 _c94511
_d94511