Clontz, Steven books & textbook
Tricky Logic Puzzles for Adults: 130+ Difficult Puzzles to Challenge Your Brain
Callisto /2020-02-25 Paperback / 180 Pages
isbn-10: 1646111451 / isbn-13: 9781646111459
Do the Math!: Challenging, Fun Math Puzzles for Kids
Clontz, Steven Clontz, Jessica
Callisto Kids /2021-05-25 Paperback / 142 Pages
isbn-10: 1647398916 / isbn-13: 9781647398910
Sudoku for Brain Fitness: 90-Day Challenge to Sharpen the Mind and Strengthen Cognitive Skills (Brain Fitness Puzzle Games)
Clontz, Steven Demyanovich, Julie
Zeitgeist /2023-09-12 Paperback / 192 Pages
isbn-10: 059368981X / isbn-13: 9780593689813
Sudoku Book Easy To Medium 1000 Puzzles Level 2,3,4, Sudoku Book For Adults Large Print, Large Print Sudoku Book, Easy To Medium Sudoku: Brain Games
Independently published /2022-02-11 Paperback / 314 Pages
Sudoku Book Medium To Hard 1000 Puzzles, Sudoku Puzzles Book Medium To Hard, Sudoku Book for Seniors: Sudoku Puzzles Book
Independently published /2022-02-11 Paperback / 314 Pages