00281nam a2200121Ia 45000030006000000080041000060400015000471000016000622450043000782600009001215460012001300050017001420STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aArora, M.G.  aPeriodic table and periodic properties  c1997  aEnglish20220125170306.0