00270nam a2200121Ia 45000030006000000080041000060400015000471000015000622450033000772600009001105460012001190050017001310STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aBabu, C.J.  aPre degree practical physics  c1999  aEnglish20220125170115.0