Discusses the smallest, most distant, and most mysterious planet in our solar system, its discovery, its peculiar orbit, and its recently discovered satellite.
- ISBN10 0200714635
- ISBN13 9780200714631
- Publish Date January 1967 (first published 1 January 1966)
- Publish Status Out of Print
- Out of Print 17 October 2003
- Publish Country GB
- Imprint TBS The Book Service Ltd
- Edition Revised edition
- Format Hardcover
- Pages 159
- Language English