00261nam a2200109Ia 4500008004100000082001600041100001600057245002400073250000800097260003800105300000800143191201s2011    xx            000 0 und d  a671.52bAGW  aAGARWAL, RL 0aWelding Engineering  a5th  c2011bKhanna PublisheraNEW DELHI  a744