00324nam a2200133Ia 45000030006000000080041000060400015000471000022000622450058000842500010001422600009001525460012001610050017001730STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aGerretsen, J.C.H.  aLectures on tensor calculus and differential geometry  aFirst  c1962  aEnglish20220125170015.0