000 00304nam a2200121Ia 4500
008 160710s1940 xx 000 0 und d
082 _a621.31921 HEH
100 _aHEHRE,FREDERICK W.
245 _aELECTRICAL CIRCUITS AND MACHINERY
260 _bJOHN WILEY & SONS
_c1940
300 _a513
942 _2ddc
_cB
999 _c9474
_d9474