Lifting by levers : how things work /
Andrew, Dunn.
Lifting by levers : how things work / Andrew Dunn. - England : Wayland, 1991. - 32 p. : ill. ; 26 cm.
Includes index.
Describes simples machines which utilize the principle of levers to move heavy objects, cut material, and make music.
9780750202183
Levers --Juvenile literature.
Lifting and carrying --Juvenile literature.
621.811 DUN
Lifting by levers : how things work / Andrew Dunn. - England : Wayland, 1991. - 32 p. : ill. ; 26 cm.
Includes index.
Describes simples machines which utilize the principle of levers to move heavy objects, cut material, and make music.
9780750202183
Levers --Juvenile literature.
Lifting and carrying --Juvenile literature.
621.811 DUN