00349nam a2200121Ia 4500008004100000020001400041041000700055082001000062100002000072245008500092260003500177300001500212180612s9999||||xx |||||||||||||| ||und||  a122913507  aen  a512.4  aGordon, Robert. 0aRing Theory : Proceedings of a Conference on Ring Theory Held in Park City, Utah  aNew YorkbAcademic Pressc1972  axi, 381 p.