00334nam a2200145Ia 45000030006000000080041000060400015000471000023000622450049000852500010001342600009001443000006001535460012001590050017001710STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aProlla Joao, B. Ed  aApproximation theory and functional analysis  aFirst  c1979  a0  aEnglish20220125165954.0