00343nam a2200133Ia 45000030006000000080041000060400015000471000044000622450040001062500010001462600024001565460012001800050017001920STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aRussell Ackoff, C.; Maurice Sasieni, W.  aFundamentals of operations research  aFirst  bWiley Easternc1978  aEnglish20220125170605.0