00246nam a2200097Ia 4500008004100000040002500041082001600066100002000082245001400102260003200116240215s9999    xx            000 0 und d  aNORSU-DumcNORSU-Dum  a512/F32f/c3  aFehr, Howard F. 0aAlgebra 1  bD.C Heath and Companyc1955