00289nam a2200121Ia 45000030006000000080041000060400015000471000020000622450047000822600009001295460012001380050017001500STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aRakestraw, N.W.  aJournal of Chemical Education 1952 Vol. 29  c1952  aEnglish20220125165851.0