00735nam0-22002771i-450-990001321580403321000132158FED01000132158(Aleph)000132158FED0100013215820000920d1991----km-y0itay50------baengRing TheoryStudent editionLouis Helle Rowen.Boston [MA]Academic Press1991XXVII, 623 p.23 cm512.4Rowen,Louis Halle57256ITUNINARICAUNIMARCBK990001321580403321120-G-159077MA1120-G-169078MA1MA1Ring Theory381284UNINAING01