My Best Mathematical and Logic Puzzles (Dover Recreational Math) (Dover Puzzle Books: Math Puzzles)Martin GardnerDJVU
The New Ambidextrous Universe: Symmetry and Asymmetry from Mirror Reflections to Superstrings: Third Revised EditionMartin GardnerPDF
On the Wild Side: The Big Bang, the Beast 666, Levitation, Rainmaking, Trance-Channeling, Seances and Ghosts and More...Martin GardnerDJVU
The Colossal Book of Mathematics : Classic Puzzles, Paradoxes, and Problems : Number Theory, Algebra, Geometry, Probability, Topology, Game Theory, Infinity, and Other Topics of Recreational MathematicsMartin GardnerPDF