PulleysDVD - 2003
The inhabitants of Mammoth Island are trying to find the best method to lift their mammoths when a young Islander uses a simple machine called a pulley to get the job done. A pulley is a wheel that carries a rope, chain or cable on its rim and can be used alone or with other pulleys to lift heavy loads.
Publisher: Wynnewood, PA : Schlessinger Media, , c2002.
Branch Call Number: j DVD 621.811 WAY THIN PULLEYS
Characteristics: 1 videodisc (13 min.) : sound, color ; 4 3/4 in.