In the far future, after human civilization has spread through the galaxy, communications begin to arrive in an apparently alien language. They appear to threaten invasion, but in order to counter the threat, the messages must first be understood.
| ISBN: | 9780575094208 |
| Publication date: | 29th March 2010 |
| Author: | Samuel R. Delany |
| Publisher: | Gollancz an imprint of Orion |
| Format: | Paperback |
| Pagination: | 208 pages |
| Series: | S.F. MASTERWORKS |
| Genres: |
Science Fiction |