
Nine Digit Number Puzzles
$8.97

Mathematical Essays
$8.97

Prime Magic Square Puzzles: Based on 5 by 5 Magic Squares with All Prime Number Entries
$8.97

Magic Squares 5 by 5: Complete the magic square puzzle
$8.97

Chapter 1, Data Structures
$12.52

My Facebook Life
$21.00

The Second Book of Abc Puzzles
$18.54

Twice Magic Squares 5 by 5
$9.06

The First Book of ABC Puzzles
$34.26