00317nam a2200133Ia 45000030006000000080041000060400015000471000023000622450050000852500010001352600009001455460012001540050017001660STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aGeorge Leland Bach  aIntroduction to analysis and policy economics  aTenth  c1982  aEnglish20220125165614.0