00278nam a2200133Ia 4500020000900000082000800009100002800017245003600045250000600081260003400087300000800121500000900129650000600138  aNULL  a519  aGupta, P. K. / Manmohan 0aProblems In Operations Research  a-  aN. DelhibSultan Chand & Sons  a904  a3437  a-