Helicopter man
Igor Sikorsky and his amazing invention
Popularity 3
"Read about Igor Sikorsky's life, and how he built the first successful helicopter"--Provided by publisher.
AeronauticsHelicoptersJuvenile literatureSikorsky, Igor Ivan,Aeronautical engineersBiographyHistorySikorsky, igor ivanovich, 1889-1972Engineers, juvenile literatureHelicopters, juvenile literatureAeronautics, juvenile literature