000 00254nam a2200121Ia 4500
100 _aKhanna/O.P.
942 _cBK
245 _aWelding Technology.
260 _bDhanpatrai &sons
_aNew Delhi.
082 _a671.5/Kha
300 _a947
546 _aENGLISH
999 _c17911
_d17911