00265nam a2200121Ia 45000030006000000080041000060400015000471000022000622450021000842600009001055460012001140050017001260STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aPeter Drucker, F.  aManagement cases  c1977  aEnglish20220125170610.0