000 00300nam a2200121Ia 4500
008 220201s1981 xx 000 0 eng d
082 _a621.3028
_bGUP
100 _aGupta,RB&Sharma,BR
245 0 _aElectrical engineering materials
260 _bSatya prakasham
_c1981
300 _a316
942 _2ddc
999 _c83267
_d83267