Aha! : a two volume collection /
Gardner, Martin,1914-
Gardner, Martin,1914-Aha! Gotcha.
Gardner, Martin,1914-Aha! Insight.
[Washington, DC] : Mathematical Association of America,
c2006.
Includes bibliographical references.
Aha! Gotcha -- Aha! Insight.
Mathematical recreations.
Paradox.
Logic puzzles.