Challenging Logic Puzzles by Clarke, Barry R.

Challenging Logic Puzzles (Official Mensa Puzzle Book), Clarke, Barry R., Used;

Challenging Logic Puzzles (Official MENSA Puzzle Book) by Barry R. Clarke

Supergenius Logic Puzzles - Paperback, by Clarke Barry R - Very Good

Challenging Logic Puzzles by Clarke, Barry R.

Challenging Logic Puzzles (Official Mensa Puzzle Book) By Barry R. Clarke

Extreme Logic Puzzles - Paperback, by Clarke Barry R - Very Good

Challenging Logic Puzzles - Barry Clarke