Brain Busting Puzzles for Ages 6-60Book - 1992
"You'll solve some of these puzzles in 10 seconds. Some might take you a couple of minutes. Others you may never solve without looking at the answers." -- Publishers.
Publisher: [United States] : Watermill Press, ©1992
Characteristics: 32 pages :,colour illustrations ;,26 cm
Alternative Title: Brain busting puzzles for ages 6-50