00336nam a2200121Ia 4500008004100000040002500041082001400066100003800080245002700118250001900145260003900164300001100203230627s9999    xx            000 0 und d  aNORSU-SiacNORSU-Sia  a160 C79    a Copi, Irven M.   and Carl Cohen  0aIntroduction to logic   aNinth Edition   bMacmillan Publishing Companyc1994  a729 p.