00438nam a2200145Ia 4500008004100000020001500041041000800056082001300064100003300077245009000110250000600200260004500206300001700251650002400268210716s2005    xx            000 0 und d  a8121909686  aeng  a003 GUPP  aGupta, Prem Kumar;Hira, D S.  aProblems in operations research: principles and solutions.bPrinciples and solutions.  a1  aNew DelhibS Chand and Company Ltdc2005  axi,1202/2013  aOperations Research