The pulley /

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by Armentrout, Patricia,
[ 01. English Non Fiction ] Series: Simple devices Published by : Rourke Press, (Vero Beach, Fla. :) Physical details: 24 p. : col. ill. ; 26 cm. Subject(s): Pulleys. Year : 1997 01. English Non Fiction Item type : 01. English Non Fiction
Location Call Number Status Date Due
Bloomfield Elementary School 621.8 ARM Available

Includes index.

Text and pictures introduce the pulley, a simple machine used primarily to lift heavy objects.