00618cam 2200217 450 1877029http://id.bnportugal.gov.pt/bib/porbase/187702920030605232200.00-262-15039-559148PTBN0054652919920605d1990 k y0pory0103 baengUSThe craft of prologRichard A. O'KeefeCambridgeMIT Press1990387 p.681.3(043.2)BNpor300199O'KEEFERichard A.1485349PTBNRPC1A-4-62coopISECmq3214671bccoopISEC0519.68 OKE ccoopUEBIBmq2879016bccoopUEBIB0ISEC3-228