Seeds, Michael A. Horizons : exploring the universe / Michael A. Seeds. - 2nd ed. - Belmont, Calif. : Wadsworth Pub. Co., c1985. - xv, 484 p., [16] p. of plates : ill. (some col.) ; 23 cm. Includes index. Includes bibliographies. ISBN: 0534040179 (pbk.) : Subjects--Topical Terms: Astronomy. LC Class. No.: QB45 / .S44 1985 Dewey Class. No.: 520 / SEH 1985