Machines: simple and compound
By: Rebecca L. Johnson.
Contributors: National Geographic Society (U.S.)
Series: National Geographic reading expeditions; Physical science; Language, literacy & vocabulary!
Publisher: National Geographic
Published: 2006
Place of publication: Washington, D.C
Language: eng
Number of pages: 36
ISBN-13: 9780792254393
Subjects: Machinery; Simple machines; Physical sciences -- Juvenile Literature
Genres: Juvenile Literature.
Notes: Includes index.