00250nam a2200109Ia 4500100001800000654001600018245003300034260003800067082001500105300000800120546001200128  aTucker/ Alan   aMathematics  aApplied  Combinations 2nd ed  bJohn Wiley & SonsaNew yorkc1984  a511.6bTHC  a447  aENGLISH