00273nam a2200121Ia 45000030006000000080041000060400015000471000020000622450020000822600020001025460012001220050017001340STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aGoodstein, R.L.  aBoolean algebra  bMacmillanc1963  aEnglish20220125165920.0