00293nam a2200121Ia 4500008004100000020001500041041000800056100002700064245003800091250001000129260002400139300000800163211209s2010    xx            000 0 und d  a8120336896  aeng  aKOLMAN, BERNADI, BUSBY  aDISCRETE MATHEMATICAL STRUCTURES   a6 ed.  aNEW DELHIbPHc2010  a522