Examines evidences of and theories about life on other planets.
- ISBN10 0152391908
- ISBN13 9780152391904
- Publish Date 1 January 1976
- Publish Status Out of Print
- Out of Print 11 May 2011
- Publish Country US
- Imprint Houghton Mifflin Harcourt P
- Format Hardcover
- Pages 85
- Language English