00306nam a2200133Ia 45000030006000000080041000060400015000471000015000622450047000772500010001242600009001345460012001430050017001550STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aHaiduc, I.  aChemistry of inorganic ring systems part-1  aFirst  c1970  aEnglish20220125170304.0