000 00287nam a2200121Ia 4500
008 220201s1959 xx 000 0 eng d
082 _a621.31
_bSLU
100 _aSluckin, W
245 0 _aPrinciple of atternating corrent
260 _aLondon
_bNews
_c1959
300 _a338
942 _2ddc
999 _c12080
_d12080