Energy.
By: Illustrated by Ellen Viereck.
Contributors: Viereck, Ellen, illus.
Series: The reason why books
Publisher: John Day Co.
Published: 1970
Place of publication: New York
Language: eng
Number of pages: 48
Subjects: Force and energy -- Juvenile literature.; Force and energy.
Notes: Explains the principles of energy, the various forms it may take, and how each is used.