000 00296nam a2200121Ia 4500
008 220201s9999 xx 000 0 eng d
082 _a621.3028
_bGUP
100 _aGupta, ML
245 0 _aGeneral & electrical engineering materials
260 _bReinbow Book Co.
300 _a286
942 _2ddc
999 _c72994
_d72994