What does it do and how does it work?
Subtitle: Power shovel, dump truck, and other heavy machines
Publisher: Harper
Published: 1959
Place of publication: New York
Language: eng
Number of pages: 58
Subjects: Earthmoving machinery; Juvenile literature
Description: An introduction to the power shovel, dump truck, bulldozer, tractor shovel, and motor scraper, explaining simply how they work and the kinds of jobs they do.
Notes: "Harpercrest edition."--Dust jacket.