00282nam a2200121Ia 4500008004100000100002300041245004300064250000900107260001200116260000900128300000700137650001600144221231s9999    xx            000 0 und d  aGrimaldi , Ralph P 0aDiscrete and Combinational Mathematics  a4 th  bPearson  c1999  apv  aMathematics