Stephen Barr Related books Experiments in Topology Dover Pubns • 1989 Intriguing Puzzles in Math and Logic Dover Pubns • 1994 Mathematical Brain Benders Dover Pubns • 1982 Our Ending Dark Age Writers Club Press • 2000 Puzzlequiz: Wit Twisters, Brain Teasers, Riddles, Puzzles, and Tough Questions Harpercollins • 1990 The Man in the Milk Carton: A Miscellany of Puzzles, Mathematical and Otherwise Harpercollins • 1990