00319nam a2200121Ia 45000030006000000080041000060400015000471000016000622450059000782600031001375460012001680050017001800STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aBateman, H.  aPartial differential equations of mathematical physics  bCambridge universityc1964  aEnglish20220125165945.0