00343nam a2200121Ia 4500008004100000041001200041082001900053100001700072245006300089260003400152300001200186650002300198231217s9999    xx            000 0 und d  aEnglish  a671.52  KHA;17  aKhanna, O P. 2aA text book of welding technology for engineering students  c1995bDhanpath RaiaNew Delhi  axvi+947  awelding,technology