000 00325nam a2200121Ia 4500
008 220201s1959 xx 000 0 eng d
082 _a621.3
100 _aConstance, John D
245 0 _aElectrical engineering for professionals engines
260 _bNew York ; Mc. Graw hill book co.
_c1959
300 _a448
942 _2ddc
999 _c75061
_d75061