00302nam a2200121Ia 45000030006000000080041000060400015000471000022000622450045000842600022001295460012001510050017001630STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aRichard Bilas, A.  aMicro economic theory graphical analysis  bMcgraw hillc1967  aEnglish20220125170052.0