00300nam a2200121Ia 4500082001700000100002300017245004500040260003100085300001900116490003300135500000500168700000500173  a512bP288.AS  aPassman, Donald S.  aThe algebraic structure of group ringsb  aNew YorkbJohn Wileyc1977  axiv, 720 Index  aPure and Applied Mathematics  a  a