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Title: Los mágicos números del Doctor Matrix: Conviértete en un maestro de los números, Author: Martin Gardner
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Los mágicos números del Doctor…
by Martin Gardner
eBook $6.99
Title: Knots and Numbers: 50 Brain Teazers, Author: Roy Whitlow
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Knots and Numbers: 50 Brain…
by Roy Whitlow
eBook $3.20
Title: 101 Interesting Questions, Author: Krissy Falzon
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101 Interesting Questions
by Krissy Falzon
eBook $3.99
Title: R.O.S. Therapy Systems Presents Amusing Brain Teaser Games by Pat Battaglia, Volume 1, Author: Pat Battaglia
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R.O.S. Therapy Systems…
by Pat Battaglia, Scott Silknitter (Created by)
#1 in Series
eBook $3.95
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Brain Training: Regain Focus and Improve Your Memory for Good
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Brain Training: Regain Focus…
by Adam Fondey
Narrated by  Digital Voice Marcus G
Audiobook (Unabridged)

$2.99

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Title: Sashas Exploration, Author: DeJaan LaFleur
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Sashas Exploration
by DeJaan LaFleur
eBook $4.99
Title: Improve Memory : Simple Techniques to Improve Your Memory Greatly, Author: Robert Jackson
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Improve Memory : Simple…
by Robert Jackson
eBook $3.23
Title: Simple Yet Highly Effective Brain Training Most People Don't Know, Author: Jeff Miller
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Simple Yet Highly Effective…
by Jeff Miller
eBook $4.15
Title: Sudoku Solver, Author: Gertrude O. Toms
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Sudoku Solver
by Gertrude O. Toms
eBook $3.99
Title: Brain Teasers, Author: Julia Gaskill
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Brain Teasers
by Julia Gaskill (Created by), Katherine Hyde (Created by)
eBook $5.99
Title: What Car Would You Drive If ... ?: A Fun Quiz Book About Car Models and Their Manufacturers, Author: Larry Collingwood
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What Car Would You Drive If ..…
by Larry Collingwood
eBook $9.99
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Instant Mind Power
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Instant Mind Power
by The INSTANT Series
Narrated by  The INSTANT Series
Explore Series
Audiobook (Unabridged) $4.97
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Title: The Retard Test: An Interactive EBook Game, Author: Sandra Ross
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The Retard Test: An…
by Sandra Ross
eBook $4.99
Title: IQ Gym: Grow Your Mind, Author: Philip Carter
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IQ Gym: Grow Your Mind
by Philip Carter
eBook $4.99
Title: If You're So Smart, Prove It, Author: Pat Battaglia
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If You're So Smart, Prove It
by Pat Battaglia
#3 in Series
eBook $4.95
Title: Curious Words and Language: 50 Brain Teazers, Author: Roy Whitlow
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Curious Words and Language: 50…
by Roy Whitlow
eBook $3.20
Title: The Brain Fitness Workout: Brain Training Puzzles to Improve Your Memory Concentration Decision Making Skills and Mental Flexibility, Author: Philip Carter
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The Brain Fitness Workout:…
by Philip Carter
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Paperback $21.99
Title: Kindle Paperwhite: Owners Manual, Author: James Burton
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Kindle Paperwhite: Owners…
by James Burton
eBook $3.99
Title: Game Freaks 365's Video Game Guide 2011, Author: Kyle W. Bell
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Game Freaks 365's Video Game…
by Kyle W. Bell
#6 in Series
eBook $4.99
Title: Sudoku Puzzle Secrets Revealed: The Best Book Guide For Sudoku Players On How To Play Sudoku With Smart Facts on Sudoku Puzzles And Sudoku Solutions Plus Essential Sudoku Tips And Ways For An Effortless, Easy Sudoku Game!, Author: Pittman
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Sudoku Puzzle Secrets Revealed…
by Pittman
eBook $3.99

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