Nardo, Don.
Gravity : the universal force / [by] Don Nardo. - San Diego, CA : Lucent, 1990. - 96 p. : ill. - The Encyclopedia of discovery and invention .
Includes bibliographical references.
Explains the force of gravity, including theories of gravity and its effects on human life.
1560062045
90006413
Gravitation.
531
Gravity : the universal force / [by] Don Nardo. - San Diego, CA : Lucent, 1990. - 96 p. : ill. - The Encyclopedia of discovery and invention .
Includes bibliographical references.
Explains the force of gravity, including theories of gravity and its effects on human life.
1560062045
90006413
Gravitation.
531