00303nam a2200133Ia 45000030006000000080041000060400015000471000016000622450024000782500010001022600028001125460012001400050017001520STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aGupta, r.K.  aOperations research  aFifth  bKrishna Prakashanc1989  aEnglish20220125170050.0