00277nam a2200121Ia 45000030006000000080041000060400015000471000019000622450025000812600020001065460012001260050017001380STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aPatharia, R.K.  aTheory of relativity  bHindustanc1963  aEnglish20220125170022.0