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

Brain-Stretching Logic Puzzles - Paperback By Clarke, Barry R - VERY GOOD

Extreme Logic Puzzles by Clarke, Barry R.

Challenging Logic Puzzles by Clarke, Barry R.

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

Extreme Logic Puzzles by Clarke, Barry R.

Brain-Stretching Logic Puzzles - 9781454930365, paperback, Barry R Clarke

Tangrams: 50 Puzzles - Paperback By Clarke, R J - GOOD