Radix Tetrad
The Radix Tetrad is a group of four science fiction books by A. A. Attanasio. The first novel, the Nebula Award-nominated Radix, was published in 1981, and the last novel, The Last Legends of Earth, was published in 1989.
The Tetrad
- Radix
- In Other Worlds
- Arc of the Dream
- ''The Last Legends of Earth''