Brain Teasers for Smart Engineers: Tricky Brain Twisters, Mind Games and Fun Problem Solving for Engineers (Perfect Gifts for Engineers)

Brain Teasers for Smart Engineers: Tricky Brain Twisters, Mind Games and Fun Problem Solving for Engineers (Perfect Gifts for Engineers)

The Ultimate Activity Book for Awesome Engineers: Tricky Brain Teasers, Mind Games and Logic Puzzle Book for Smart Adults (Perfect Gift for Engineers)

The Ultimate Activity Book for Intelligent Men: Tricky Brain Teasers, Mind Games and Logic Puzzle Book for Adults (Perfect Gift for Men)