00305nam a2200121Ia 4500008004100000100002500041245004200066260002700108300000800135650001600143942000700159999001700166190216s9999||||xx |||||||||||||| ||und||  aAlfred S.Posamentier 0aMathematical Amazements And Surprises  bPrometheus Booksc2009  a269  aMathematics  cBK  c32269d32269