00288nam a2200121Ia 45000030006000000080041000060400015000471000018000622450048000802600009001285460012001370050017001490STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aTheo Hainmann  aProfessional management theory and practice  c1966  aEnglish20220125170611.0