Hartmann, William K. Astronomy, the cosmic journey / William K. Hartmann. - Belmont, California : Wadsworth Publishing Company, c1987. - xxiii, 548 pages : Illustrations ; 28 cm. Bibliography: pages 523-534. Includes index. Bibliography: p. 523-534. ISBN: 0534079385 LCCN: 86028131 Subjects--Topical Terms: Astronomy. LC Class. No.: QB45 / .H32 1987 Dewey Class. No.: 520