000 00311nam a2200121Ia 4500
008 211209s1981 xx 000 0 und d
041 _aeng
082 _a620.112 97 N81 GUP/SHA
100 _aGUPTA K B
245 _aELECTRICAL ENGINEERING MATERIALS
260 _aNEW DELHI
_bSATYAPRAKASHAN
_c1981
300 _a330
999 _c21719
_d21719