Planets.
By: [Prepared with the co-operation of Science Service.
Contributors: Ley, Willy, 1906-1969.; Science Service.
Series: Science Program
Publisher: N. Doubleday
Published: 1968
Place of publication: Garden City, N.Y
Language: eng
Number of pages: 64
Subjects: Planets.
Notes: Based on Planets by W. Ley.