Kals, W S. How to read the night sky : a new and easy way to know the stars, planets, and constellations / [by] W. S. Kals. - New York : Doubleday, 1974. - 155 p. : ill. Includes bibliographical references. ISBN: 0385025041 LCCN: 73083643 Subjects--Topical Terms: Astronomy. Dewey Class. No.: 523