Christiansen, Jennifer.

Get to know wedges /by Jennifer Christiansen. --
Wedges
New York :Crabtree Pub.,c2009.

32 p. :col. ill. --

Includes Internet addresses (p. 32) and index.

Describes the simple machine known as a wedge, how it works and how it is used.

LSC25.95

Canadian

1.Wedges--Juvenile literature.2.Simple machines--Juvenile literature.Dynamic Details
#255LCCN:2009-4902