00645nam0-22002411i-450-990001296860403321000129686FED01000129686(Aleph)000129686FED0100012968620000920d1971----km-y0itay50------baengArithmetics groupsby HUMPHREYS J.E.New YorkNew York University Press1971Humphreys,James E.47861ITUNINARICAUNIMARCBK99000129686040332121-A-1817639MA1MA1Arithmetics groups384200UNINAING01