The simple facts of simple machines /

Describes the simple machines: lever, pulley, wedge, screw, inclined plane, and wheel and axle, and explains how they are utilized to make work easier.

Bibliographic Details

Main Author:	James, Elizabeth
Other Authors:	Barkin, Carol, Dorn, Daniel, Stan, Susan
Format:	Book
Language:	English
Published:	New York : Lothrop, Lee & Shepard, [1975]
Subjects:	Simple machines > Juvenile literature. Simple machines.