00813nam0-22002891i-450-990001173670403321000117367FED01000117367(Aleph)000117367FED0100011736720000920d1967----km-y0itay50------baeng<<The >>algebraic theory of semigroupsA. H. Clifford, G. B. PrestonProvidenceAmerican Mathematical Society1967Mathematical surveys7v. IISemigruppiClifford,A.H.345913Preston,G.B.ITUNINARICAUNIMARCBK990001173670403321C-46-(7-210914MA1MA1Algebraic theory of semigroups345913UNINAING01