000 00286nam a2200121Ia 4500
008 220201s1963 xx 000 0 eng d
082 _a621.3
100 _aEricqson, William H
245 0 _aElectrical engineering
260 _bNewyork:John wiley
_c1963
300 _a614
942 _2ddc
999 _c75412
_d75412