Gravity is a mystery
By: by Franklyn M. Branley ; illustrated by Don Madden.
Contributors: Madden, Don, 1927-  ill.
Edition: Rev. ed.
Series: Let's-read-and-find-out science book
Publisher: T.Y. Crowell
Published: 1986
Place of publication: New York
Language: eng
Number of pages: 32
Subjects: Gravitation -- Juvenile literature; Gravity -- Juvenile literature; Gravity
Description: Explains in simple text and illustrations what is known about the force of gravity.