00775nam0-22002891i-450-990001320960403321000132096FED01000132096(Aleph)000132096FED0100013209620000920d1989----km-y0itay50------baengCodes and cryptographyDominic Welsh.2nd ed. -OxfordClarendon Press1989.IX, 257 p.24 cm652.8Welsh,Dominic James Anthony<1938- >368334ITUNINARICAUNIMARCBK990001320960403321121-N-58935MA1121-N-68936MA1MA1Codes and cryptography383111UNINAING01