How have roads changed over time? What materials and machines are needed to build roads? Who suggested using Tar? Why is asphalt used now? What do you find under roads?

ISBN	9781741201215
Series	Wings
Author	Steer, Michael
Illustrator	Smith, Martin
Themes	transport
Format	Small Book
Text Type	Report
Reading Level	Level 24
Classification	Nonfiction
Stock	High
Release Date	December 15, 2005