Showing 1 - 6 of 6 Results
1.
Challenging Puzzles in Logic by Hufford, Roger ISBN: 9780486242248 List Price: $4.95
2.
Droid's Dilemma by Roger Hufford ISBN: 9780866800518
3.
Mental workouts by Roger Hufford ISBN: 9780866801041
4.
Was Lady Godiva Involved in a Coverup? and Other Logic Puzzles by Hufford, Roger ISBN: 9780139447785 List Price: $7.95
5.
Was Lady Godiva Involved in a Cover-Up? : And Other Logic Puzzles by Hufford, Roger ISBN: 9780139447884 List Price: $7.95
6.
Galaxy of perplexities by Roger Hufford ISBN: 9780866801119