00282nam a2200109Ia 4500008004100000082001800041100001900059245003800078250000900116260003900125300000800164240913s9999||||xx |||||||||||||| ||und||  a793.73  GAR/E  aMartin Gardner 0aEntrtraining Mahtematical Puzzles  aNULL  bDover PublicationsaNew Yorkc2012  a112