00315nam a2200121Ia 45000030006000000080041000060400015000471000046000622450047001082600009001555460012001640050017001760STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aCampbell Mc Connell, K.; Harish Gupta, C.  aEconomics principles problems and policies  c1977  aEnglish20220125165607.0