00689nam0-22002651i-450-990001229830403321000122983FED01000122983(Aleph)000122983FED0100012298320000920d1964----km-y0itay50------baeng<<The >>study of arithmeticL. Clark LayNew YorkMacmillanc1964AritmeticaFondamenti513.2Lay,L. Clark57023ITUNINARICAUNIMARCBK99000122983040332110-B-186709MA1MA1Study of arithmetic382030UNINAING01