000 00349nam a2200145Ia 4500
008 230913s9999 xx 000 0 und d
082 _a621.8 gup
100 _aGupta, R
245 0 _aWelding Engineering Science & Metallurgy
260 _aNEW DELHI
260 _bS.CHAND
260 _c1985
300 _a112
650 _aElectronics Engineering
999 _c143978
_d143978