00313nam a2200133Ia 45000030006000000080041000060400015000471000015000622450042000772500011001192600020001305460012001500050017001620STCL150530s9999    xx            000 0 und d  aSTCLcSTCL  aEeynes,J.N  aStudies and exercises in Formal Logic  aFourth  bMacmillanc1906  aEnglish20220125165326.0