00294nam a2200121Ia 45000030006000000080041000060400015000471000021000622450038000832600022001215460012001430050017001550STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aStoll Robert, R.  aSets logic and axiomatic theories  bW.H.Freemanc1961  aEnglish20220125165921.0