00293nam a2200121Ia 45000030006000000080041000060400015000471000021000622450050000832600009001335460012001420050017001540STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aLeonard Hein, W.  aQuantitative approach to managerial decisions  c1974  aEnglish20220125170606.0