00309nam a2200133Ia 45000030006000000080041000060400015000471000032000622450024000942500010001182600018001285460012001460050017001580STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aPremkumar Gupta; Hira, D.S.  aOperations research  aThird  bS.Chandc1993  aEnglish20220125170050.0