00739nam0-22002651i-450-99000083670040332120001010000083670FED01000083670(Aleph)000083670FED0100008367020001010d--------km-y0itay50------baitay-------001yyCombinatorial mathematics and its applicationss.l.Academic PressWelsh,Dominic James Anthony<1938- >368334ITUNINARICAUNIMARCBK99000083670040332102 50 C 61733FINBNFINBNCombinatorial mathematics and its applications347880UNINAING01