00305nam a2200121Ia 45000030006000000080041000060400015000471000026000622450057000882600009001455460012001540050017001660STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aGerretson Johan, C.H.  aLecture on Tensor calculus and differential geometry  c1962  aEnglish20220125165951.0