00289nam a2200109Ia 4500008004100000020001500041082001700056100002100073245004000094260003700134300000800171190328s9999||||xx |||||||||||||| ||und||  a0140207139  a511.3bGAR/M  aGardner, Martin  0aMathematical Puzzles and Diversions  aLondonbPenguin Books Ltd.c1982  a154