Howse, Jennifer.
Levers /
Jennifer Howse.
- New York, NY : Weigl Publishers, 2010.
- 24 p. : ill. (chiefly col.) ; 27 cm.
- Science matters. .
- Science matters. .
Includes index.
9781605960319 (hard cover : alk. paper) 9781605960326 (soft cover : alk. paper)
2009001921
Levers.
Lifting and carrying.
TJ147 / .H73 2009
621.8