000 00300nam a2200109Ia 4500
008 160710s1957 xx 000 0 und d
082 _aTHE
245 _aJOURNAL OF THE INSTUTION OF ELECTRICAQL ENGNEERS
260 _bTHE INSITUION OF THE ELECTRICAL ENGINEERS
_c1957
300 _a679
942 _2ddc
_cB
999 _c23408
_d23408