books by subject
Children's Books on Heavy Machinery
How Machines Work (Children's World)
MONSTER MACHINES TRUCKS
Speed Machines
Inventions: A History of Key Inventions that Changed the World
How Things Work: Simple Mechanisms
Wheels Keep Turning: a book about simple machines (Wonderwise)
Simple Machines: Inclined Planes
Science Tools: Microscopes and Magnifying Glasses
Science Tools: Rulers and Tape Measures
Mighty Machines (Q & A Reference S.)
Big Machines Rescue!
Racing Along (Big Shiny Machines)
Printing (Usborne How to Guides)
Dig!: Peek a Flap Children’s Board Book (Peek a Boo Dig! Fun Children's Interactive Lift a Flap Board Book for Ages 0 and Up)
How to Catapult a Castle: Machines That Brought Down the Battlements (Fact Finders, Extreme)
Moving Buddies: Move & Play Fun! (Novelty)
How to Draw Machines (Usborne Pocket Art)
Jumbo Jets (Mighty Machines (Hardcover))
Hammer at the Construction Site!: 10 Construction Sounds (10 Button Sound)
Stickmen's Guide to Gigantic Machines
My First Trucks and Diggers Let's Get Driving
Until I Met Dudley: How everday things really work
Digger (Machines at Work)
Wheels Keep Turning: a book about simple machines (Wonderwise)
The World's Most Unusual Machines (Extreme Machines)
MONSTER MACHINES TRUCKS
Master Engineer: Robots
Ultimate Robot Kit
Trucks (Young machines)
