000 00272nam a2200121Ia 4500
008 220201s1962 xx 000 0 eng d
082 _a621.3
100 _aCarr, DL
245 0 _aElectrotechnlogy
260 _bLondon: Edward arnaldo
_c1962
300 _a72
942 _2ddc
999 _c76323
_d76323