aha! Insight
$30 · Offered by Bauer Rare Books
New York City/San Francisco: Scientiific American, Inc. / W. H. Freeman and Company, 1978. First printing. 8vo. 179 pp. Illustrated. Softcover binding, very good condition. 125073 . Item #23108 Mathematical recreations.Puzzles.Problem solving.
- Binding: Softcover
Found via Rare Books Intel, a search across rare-book dealers, auction houses and marketplaces worldwide.