00691nam0-22002651i-450-99000085292040332120001010000085292FED01000085292(Aleph)000085292FED0100008529220001010d--------km-y0itay50------baitay-------001yyComputability and unsolvabilitys.l.McGraw-HillDavis,Martin<1928- >51851ITUNINARICAUNIMARCBK99000085292040332102 52 C 122047FINBNFINBNComputability and unsolvability348627UNINAING01