Armentrout, Patricia, 1960-
The pulley / [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 pulley, a simple machine used primarily to lift heavy objects.
1571031782
97015148
Pulleys
Pulleys
TJ1103 / .A76 1997
621.8 ARM
The pulley / [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 pulley, a simple machine used primarily to lift heavy objects.
1571031782
97015148
Pulleys
Pulleys
TJ1103 / .A76 1997
621.8 ARM