00295nam a2200121Ia 45000030006000000080041000060400015000471000030000622450043000922600009001355460012001440050017001560STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aManglik, R.D.; Seth, S.S.  aTheory and problems on vector calculus  c1968  aEnglish20220125165950.0