| Author | Hal Clement |
| Format | Paperback |
| Language | English |
| Location | United States Of America |
| Copyright | 1957 |
| This Edition Published | 1975 |
| Pages / Font | 185 pages |
| SBN | 345243684150 |
| Notes | Ballantine |
| Author | Hal Clement |
| Format | Paperback |
| Language | English |
| Location | United States Of America |
| Copyright | 1957 |
| This Edition Published | 1975 |
| Pages / Font | 185 pages |
| SBN | 345243684150 |
| Notes | Ballantine |