The pulley
By: Patricia Armentrout.
Series: Simple devices
Publisher: Rourke Press
Published: 1997
Place of publication: Vero Beach, Fla
Language: eng
Number of pages: 24
Subjects: Pulleys -- Juvenile literature.; Pulleys.
Description: Text and pictures introduce the pulley, a simple machine used primarily to lift heavy objects.
Notes: Includes index.