Forces in the earth : a book about gravity and magnetism /

Defines gravity and magnetism and how they function.

Bibliographic Details

Main Author:	Lefkowitz, R. J., 1942-
Other Authors:	Yake, J. Carol
Format:	Book
Language:	English
Published:	New York : Parents' Magazine Press, [1976]
Series:	Finding-out books.
Subjects:	Gravity > Juvenile literature. Geomagnetism > Juvenile literature. Gravity. Geomagnetism.