The lever
By: Patricia Armentrout.
Series: Simple devices
Publisher: Rourke Press
Published: 1997
Place of publication: Vero Beach, Fla
Language: eng
Number of pages: 24
Subjects: Levers -- Juvenile literature.; Lifting and carrying -- Juvenile literature.; Levers.
Description: Text and pictures introduce the lever, a simple machine used to change force and motion.
Notes: Includes index.