Challenging Logic Puzzles (Official Mensa Puzzle Book)
by Barry R. Clarke,illustrated by Rob Collinet
ISBN 13: 9781402705410
Format: Illustrated (96 pages) Publisher: Sterling Published: 01 Sep 2003
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Brain-Stretching Logic Puzzles
by Barry R. Clarke
ISBN 13: 9781454930365
Format: Paperback (96 pages) Publisher: Puzzlewright Published: 07 May 2019