00316nam a2200121Ia 4500008004100000041001200041082001600053100001700069245003800086260003500124300001200159650002300171231217s9999    xx            000 0 und d  aEnglish  a671.52  KHA  aKhanna, O P. 2aA text book of welding technology  c1996bDhanapat  RaiaNew Delhi  axvi+947  aWelding technology