00798nam0-22003011i-450-99000046859040332120080721162231.0000046859FED01000046859(Aleph)000046859FED0100004685920020821d1973----km-y0itay50------baenga-------001yyFormual languagesArto SalomaaNew YorkAcademic Press1973322 p.ill.24 cmACM monograph seriesLinguaggi formali511.3Salomaa,Arto25836ITUNINARICAUNIMARCBK99000046859040332110 P.T. 3141681 CCEDINELDINELFormual languages331673UNINA