Simple machines /
Rau, Dana Meachen
Simple machines / Dana Meachen Rau. - New York : Children`s Press, an imprint of Scholastic, Inc., ©2012. - 48 pages: color illustrations 22 cm. - True book. .
Lex: 780
Examines ancient machines with timelines and photos, including how they have been used throughout history.
in English
9780531265864
Simple machines--Juvenile literature
Simple machines
621.8 R19s c2012
Simple machines / Dana Meachen Rau. - New York : Children`s Press, an imprint of Scholastic, Inc., ©2012. - 48 pages: color illustrations 22 cm. - True book. .
Lex: 780
Examines ancient machines with timelines and photos, including how they have been used throughout history.
in English
9780531265864
Simple machines--Juvenile literature
Simple machines
621.8 R19s c2012