PulleysBook - 2002
How does a pulley work? What is it? Colorful diagrams and fun-to-do experiments help you explore the many ways this simple machine can help make work easier and faster.
Publisher: Minneapolis : Lerner Publications Co, c2002
Branch Call Number: 621.8 11 WAL 2002
Characteristics: 47 p. : col. ill. ; 23 cm