Why things don't work.
By: by David West.
Series: Why things don't work
Publisher: Raintree
Published: 2007
Place of publication: Chicago, Ill
Language: eng
Number of pages: 32
Subjects: Helicopters -- Maintenance and repair -- Juvenile literature.; Helicopters -- Parts -- Juvenile literature.
Genres: Juvenile literature.
Other titles: Helicopter
Notes: Includes index.