00323nam a22001217a 4500020001400000040000900014082001200023100001500035110001600050245003900066260005700105650003900162  a818014013  cNUST  a621 GUP  aGupta, P.N  aPoonia, M.P  aElements of Mechanical Engineering  aNew Delhi:bStandard Publishers Distributors,c2004.  aElements of Mechanical Engineering