Morrison, David, 1940- Abell's exploration of the universe / [electronic resource] / David Morrison, Sidney Wolff, Andrew Fraknoi.. — 7th ed.. — Philadelphia : : Saunders College Pub.,, c1995.. — xvi, 682 p. : : ill. (some col.) ; 29 cm. — (Saunders golden sunburst series).
Rev. ed. of: Exploration of the universe. 6th ed. 1991.
Includes bibliographical references (p. [627]-630) and index.