Seeds, Michael A. Universe : solar systems, stars, and galaxies / Michael A. Seeds and Dana E. Backman - 7th ed. - Wichita, KS : Cengage, c2012. - xiv,514 p. : ill., maps. ; 29 cm. ISBN: 9781111427238 LCCN: Subjects--Topical Terms: Solar system LC Class. No.: QB501 / .S43 2012