00274nam a2200121Ia 45000030006000000080041000060400015000471000019000622450033000812600009001145460012001230050017001350STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aGray James, F.  aSets relations and functions  c1962  aEnglish20220125165920.0