00421nam a2200169Ia 4500008004100000020001800041082002000059100002300079245002400102250000800126260003600134300000900170650003300179700001700212942000700229999001500236190328s9999||||xx |||||||||||||| ||und||  a9788121902816  a658.4034bGUP/O  aGupta, Prem Kumar  0aOperations Research  a7th  aNew DelhibS. Chand & Co.c2015  a1498  aManagement/Accounts/OR/AU/OB  aHira, D. S.   cBK  c3974d3974