00351nam a2200133Ia 45000030006000000080041000060400015000471000034000622450072000962500011001682600009001795460012001880050017002000STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aHarold Koontz; Cyril ODonnell  aManagement a system and contigency analysis of managerial functions  aSecond  c1976  aEnglish20220125170612.0