No Earthly Explanation (Mankind: A Space Experiment)
| Book | No Earthly Explanation |
| Copyright Holder | John Wallace Spencer |
| Reprinted with/by arrangement with | Phillips Publishing Company |
| Imprint | Corgi |
| Illustrator | Norm Lambert |
| Publisher | Bantam Books |
| About/Subject | UFO: Unidentified Flying Object |
| Format | Paperback |
| Language | English |
| Location | Toronto New York London |
| Copyright | 1974 |
| This Edition Published | 1975-10 |
| Pages / Font | 178 pages |
| ISBN | 0 552 10071 4 |
| Price | 60p |
Added by steppenwolf_a_558