Helicopters /
by Jenny Fretland VanVoorst.
- 24 pages : colored illustrations ; 22 cm.
- How does it work? .
"Pogo Books are published by Jump!"
Includes bibliographical references and index.
"In Helicopters, early fluent readers learn about the science, engineering, and physics behind their favorite vehicles. Vibrant, full-color photos and carefully leveled text engage young readers as they learn about these exciting machines."--