000 00299nam a2200121Ia 4500
008 160710s1941 xx 000 0 und d
082 _a538.3 R 81 E
100 _aROTERS, HERBERT C.
245 _aELECTROMAGNETIC DEVICES
260 _bJOHN WILEY & SONS, INC.
_c1941
300 _a561
942 _2ddc
_cB
999 _c9499
_d9499