| Author | Larry Niven |
| Cover Art by | H. R. Van Dongen |
| Series | Tales of Known Space, Known Space |
| Format | Paperback |
| Language | English |
| Location | United States Of America |
| Copyright | 1973 |
| Reprinted | 1981 |
| Pages / Font | 218 pages |
| ISBN | 0345293029 |
| Notes | Del Rey / Ballantine |