00333nam a2200133Ia 45000030006000000080041000060400015000471000016000622450040000782500010001182600042001285460012001700050017001820STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aStephen, A.  aWorked examples a level economics-2  aFirst  bCetlic Revision Aids Middle Sexc1979  aEnglish20220125165525.0