The simple facts of simple machines
By: Elizabeth James & Carol Barkin ; photos. by Daniel Dorn, Jr., diagrs. by Susan Stan.
Contributors: Barkin, Carol, joint author.; Dorn, Daniel.; Stan, Susan.
Publisher: Lothrop, Lee & Shepard
Published: 1975
Place of publication: New York
Language: eng
Number of pages: 64
Subjects: Simple machines -- Juvenile literature.; Simple machines.
Description: Describes the simple machines--lever, pulley, wedge, screw, inclined plane, and wheel and axle--and explains how they are utilized to make work easier.
Notes: Includes index.