00345nam a2200133Ia 45000030006000000080041000060400015000471000041000622450047001032500010001502600022001605460012001820050017001940STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aChurchill Ruel, V.; Brown Ward James  aFourier series and boundary value problems  aThird  bMcgraw hillc1978  aEnglish20220125170040.0