Seeds, Michael A. Horizons : exploring the universe / Michael A. Seeds. - 6th ed. - Pacific Grove, CA : Brooks/Cole, c2000. - 1 v. (various pagings) : ill. (some col.), col. maps ; 28 cm. + 2 CD-ROMs (4 3/4 in.) Includes index. ISBN: 0534572588 LCCN: 99030934 Subjects--Topical Terms: Astronomy.Astronomía. LC Class. No.: QB 45 / S451h 2000 Dewey Class. No.: 520