00341nam a2200133Ia 45000030006000000080041000060400015000471000016000622450059000782500010001372600031001475460012001780050017001900STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aBateman, H.  aPartial differential equations of mathematical physics  aFirst  bCambridge universityc1959  aEnglish20220125165945.0