00345nam a2200133Ia 4500008004100000020001500041041001200056100001600068245005200084260003600136300000900172650001500181700001500196221030s9999    xx            000 0 und d  a8121902819  aEnglish  aP. K. Gupta 0aOperations Researchcby P. K. Gupta, D. S. Hira  bS. Chand & Co.aNew Delhic2016  a1498  aManagement  aD. S. Hira