00785nam0-22002651i-450-990001186740403321000118674FED01000118674(Aleph)000118674FED0100011867420000920d1979----km-y0itay50------baengGraded and filtered rings and modulesby NASTASESCU and VAN OYSTAEYEN F.Berlin [etc.]Springer-Verlag1979Lecture Notes in Mathematics758Nastasescu,Constantin54151Van Oystaeyen,F.ITUNINARICAUNIMARCBK990001186740403321C-20-(75819899MA1MA1Graded and filtered rings and modules342673UNINAING01