00315nam a2200133Ia 45000030006000000080041000060400015000471000021000622450050000832500010001332600009001435460012001520050017001640STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aLeonard Hein, W.  aQuantitative approach to managerial decisions  aThird  c1978  aEnglish20220125170059.0