00309nam a2200133Ia 45000030006000000080041000060400015000471000035000622450029000972500011001262600009001375460012001460050017001580STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aHarld Koontz; Cyril O; Donnell  aEssentials of management  aSecond  c1979  aEnglish20220125170611.0