37 books • 7 series
A Field Guide to Roadside Technology
Rocket-Powered Science
Loco-Motion
What's That? (Watts Reference (Hardcover))
How to Build Your Own Prize-Winning Robot (Science Fair Success)
Inventing Toys
Fantastic Flying Fun with Science
Wacky Water Fun with Science
How to Enter and Win an Invention Contest (Science Fair Success)
Young Inventors at Work!: Learning Science by Doing Science
Young Inventors at Work!
Just Plane Smart!
Wrapper Rockets & Trombone Straws