00725nam0-22002531i-450-990001227170403321000122717FED01000122717(Aleph)000122717FED0100012271720000920d1979----km-y0itay50------baengSemigroups and Combinatorial Applicationsby LALLEMENT G.New York [etc.]John Wiley1979.Pure and applied mathematicsLallement,Gerard56980ITUNINARICAUNIMARCBK99000122717040332114-H-2519828MA1MA1Semigroups and Combinatorial Applications381911UNINAING01