Earth movers /
David and Patricia Armentrout.
- Vero Beach, Fla. : Rourke Book Co., c1995.
- 24 p. : col. ill. ; 19 cm.
- Discovery library of heavy equipment .
- Armentrout, David, 1962- Discovery library of heavy equipment. .
Includes index.
Pictures and text provide information about different types of earth moving machines and the work they perform.