Sources
| Source | ID | Link |
|---|---|---|
| GoodReads | 132101825 | https://www.goodreads.com/book/show/132101825 |
| Amazon | B009M0ODU2 | https://www.amazon.com/dp/B009M0ODU2 |
Description
An Ace Double book (F-253) containing three stories by A. E. Van Vogt -- The Twisted Men, The Star-Saint, and The Earth Killers -- and one novel -- One of Our Asteroids Is Missing -- by Robert Silverberg (writing under the pen name, Calvin M. Knox.