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| Only Books by Helen Grabarchuk | X |
 | | Puzzle Box, Volume 1 by Andrea Gilbert, Bram Cohen, Ed Pegg Jr., Richard Candy, Erich Friedman, Harry Nelson, Professor Donald Knuth, Shelly Hazzard, Helen Grabarchuk, Tanya Grabarchuk, Serhiy Grabarchuk, Peter Grabarchuk, Peter Winkler, Peter Grabachuk, Helen Grabarchuck, Tanya Grabarchuck, Peter Grabarchuck Paperback, 96 Pages, Published 2016 by Dover Publications ISBN-13: 978-0-486-81004-1, ISBN: 0-486-81004-6 |
 | | Puzzle Box, Volume 3 by Ali Kilick, Dennis Shasha, Andrea Gilbert, Ed Pegg Jr., Erich Friedman, Harry Nelson, Helen Grabarchuk, Shelly Hazzard, Tanya Grabarchuk, Peter Grabarchuk, Serhiy Grabarchuk Paperback, 96 Pages, Published 2017 by Dover Publications ISBN-13: 978-0-486-81685-2, ISBN: 0-486-81685-0 |
 | | Strimko 7x7 150 Master Number Logic Puzzles by Serhiy Grabarchuk, Tanya Grabarchuk, Peter Grabarchuk, Helen Grabarchuk Paperback, 108 Pages, Published 2017 by Independently Published ISBN-13: 978-1-973306-06-1, ISBN: 1-973306-06-9 |
 | | Strimko 4x4 150 Easy Number Logic Puzzles by Serhiy Grabarchuk, Tanya Grabarchuk, Peter Grabarchuk, Helen Grabarchuk Paperback, 108 Pages, Published 2017 by Independently Published ISBN-13: 978-1-973305-15-6, ISBN: 1-973305-15-1 |
 | | Strimko Book 1 150 Easy-to-Master Number Logic Puzzles by Serhiy Grabarchuk, Tanya Grabarchuk, Peter Grabarchuk, Helen Grabarchuk, The Grabarchuk Family Paperback, 108 Pages, Published 2017 by Independently Published ISBN-13: 978-1-973162-96-4, ISBN: 1-973162-96-2 |
 | | Strimko 5x5 150 Medium Number Logic Puzzles by Serhiy Grabarchuk, Tanya Grabarchuk, Peter Grabarchuk, Helen Grabarchuk Paperback, 108 Pages, Published 2017 by Independently Published ISBN-13: 978-1-973305-72-9, ISBN: 1-973305-72-0 |
 | | Strimko 6x6 150 Hard Number Logic Puzzles by Serhiy Grabarchuk, Tanya Grabarchuk, Peter Grabarchuk, Helen Grabarchuk Paperback, 108 Pages, Published 2017 by Independently Published ISBN-13: 978-1-973305-88-0, ISBN: 1-973305-88-7 |
 | | Puzzle Box, Volume 2 by Peter Grabarchuk, Ed Pegg Jr., Andy Parr, Professor Donald Knuth, Helen Grabarchuk, Erich Friedman, Gianni A. Sarcone, Hasan Yurtoglu, Richard Candy, Tanya Grabarchuk, Serhiy Grabarchuk, Shelly Hazard, Suzanne Hazard Paperback, 96 Pages, Published 2017 by Dover Publications ISBN-13: 978-0-486-81348-6, ISBN: 0-486-81348-7 |
 | | A Blessing in Disguise 42 More Life Lessons From Today's Greatest Teachers by Cohen, Andrea Joy, MD Trade Paperback, 306 Pages, Published 2020 by Florence Cohen ISBN-13: 978-1-77733-270-9, ISBN: 1-77733-270-2 |
 | | Sixteen Weeks The Physique Athletes Guide to a Perfect Prep by Andrea, Rian, and Cohen, Mel Trade Paperback, Published 2020 by Physique Athlete ISBN-13: 978-1-73595-320-5, ISBN: 1-73595-320-2 |
Helen Grabarchuk
