Title:
 Simple machines
Personal Author EPSB:
 
Summary:
 Rhyming text and photographs explore the many tasks that can be performed by such simple machines as springs, ramps, and pulleys.
Year Published:
 1999
Series:
 
Physical Description:
 1 v. (unpaged) : col. ill. ; 18 cm.
ISBN:
 9780439081269
Publisher:
 New York : Scholastic, c1999.

