Aha! Aha! insight /
Gardner, Martin,
Aha! Aha! insight / Martin Gardner ; [framed drawings by Jim Glen, diagrs. by Felix Cooper]. - New York : Scientific American, c1978. - viii, 179 p. : ill. ;
0894540017
Mathematical recreations.
Puzzles.
Problem solving.
QA95 G23. 1978
Aha! Aha! insight / Martin Gardner ; [framed drawings by Jim Glen, diagrs. by Felix Cooper]. - New York : Scientific American, c1978. - viii, 179 p. : ill. ;
0894540017
Mathematical recreations.
Puzzles.
Problem solving.
QA95 G23. 1978