00722nam0-22002411i-450-990001226240403321000122624FED01000122624(Aleph)000122624FED01000122624--------d--------km-y0itay50------baengDiscrete mathematics and algebraic structuresby Gerstein L J.New YorkFreeman1987.<<A>> Series Books in the Mathematical SciencesGerstein,Larry J.56960ITUNINARICAUNIMARCBK990001226240403321114-B-544945MA1MA1Discrete mathematics and algebraic structures381942UNINA