00323nam a2200121Ia 45000030006000000080041000060400015000471000025000622450076000872600009001635460012001720050017001840STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aFraenkel Abraham, A.  aStudies in logic and the foundations of mathematics abstract set theory  c1961  aEnglish20220125165920.0