00310nam a2200121Ia 45000030006000000080041000060400015000471000017000622450046000792600034001255460012001590050017001710STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aNorman, N.C.  aPeriodicity and the sand p block elements  bOxford University pressc1997  aEnglish20220125170228.0