Extreme Logic Puzzles - VERY GOOD

Extreme Logic Puzzles by Clarke, Barry R.

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

Challenging Logic Puzzles by Clarke, Barry R.

Challenging Logic Puzzles - Paperback By Clarke, Barry R - GOOD

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

Challenging Logic Puzzles - Paperback By Clarke, Barry R - VERY GOOD

Challenging Logic Puzzles - Paperback By Clarke, Barry R - ACCEPTABLE