Duncan, John Charles Astronomy a textbook. - 4th ed. By John Charles Duncan ... - New York London Harper & brothers [1946] - 5 p.l., 500 p. incl. front., illus., diagrs. col. pl., charts. 24 cm. "The first edition appeared in 1926." Includes bibliographical references. LCCN: 46004305 //r90 Subjects--Topical Terms: Astronomy LC Class. No.: QB45 / .D8 1946 Dewey Class. No.: 520