00281nam a2200121Ia 45000030006000000080041000060400015000471000020000622450039000822600009001215460012001300050017001420STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aArmstrong, E.F.  aChemistry in the twentieth century  c1925  aEnglish20220125170225.0