Machines at work
By: Alan Ward.
Series: Project science
Publisher: Franklin Watts
Published: 1993
Place of publication: New York
Language: eng
Number of pages: 31
Subjects: Machinery -- Juvenile literature.; Machinery.; Machinery -- Experiments.; Experiments.
Description: An introduction to machines, from levers and pulleys to compound machinery, which includes instructions for activities and projects to illustrate the principles.
Notes: Includes index.