Helicopters /
by Darlene R. Stille.
- Minneapolis, Minn. : Compass Point Books, c2004.
- 32 p. : ill. ; 24 cm.
- Transportation. .
- Stille, Darlene R. Transportation. .
Includes bibliographical references (p. 30) and index.
A simple introduction to different kinds of helicopters and their uses.