Armentrout, Patricia, 1960-
The lever / [book] - Vero Beach, Fla. : Rourke Press, c1997. - 24 p. : col. ill. ; 26 cm. - Simple devices . - Armentrout, Patricia, 1960- Simple devices. .
Includes index.
Text and pictures introduce the lever, a simple machine used to change force and motion.
1571031774
97015149
Levers
Lifting and carrying
Levers
TJ147 / .A763 1997
621.8 ARM
The lever / [book] - Vero Beach, Fla. : Rourke Press, c1997. - 24 p. : col. ill. ; 26 cm. - Simple devices . - Armentrout, Patricia, 1960- Simple devices. .
Includes index.
Text and pictures introduce the lever, a simple machine used to change force and motion.
1571031774
97015149
Levers
Lifting and carrying
Levers
TJ147 / .A763 1997
621.8 ARM