00323nam a2200133Ia 45000030006000000080041000060400015000471000023000622450042000852500011001272600022001385460012001600050017001720STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aRobert Bingham, C.  aEconomic concepts programmed approach  aSecond  bMcgraw hillc1969  aEnglish20220125170059.0