Nardo, Don, 1947 Boekhoff, P. M Boudreau, Gloria Juettner, Bonnie Baxter, Roberta Kelly, Diane A Davis, Lucile Silverman, Buffy Kirchner, Renee Parks, Peggy J Nardo, Don Lanier, Wendy Stewart, Gail B Miller, Heather
Discusses early theories on gravity, principles of how gravity works, and possible effects of gravity with regards to such phenomena as white dwarfs and black holes.