00271nam a2200121Ia 45000030006000000080041000060400015000471000018000622450031000802600009001115460012001200050017001320STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aPerumal, R.M.  aEconomics for intermediate  c1954  aEnglish20220125165525.0