Publications (5)
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1976 |
|
The Planet That Wasn't | Doubleday | Nonfiction | 111 |
| February 1976 |
|
The Magazine of Fantasy and Science Fiction, February 1976 | Mercury Press, Inc. | MAGAZINE | 134 |
| 1977 |
|
The Planet That Wasn't | Sphere Books | Nonfiction | 130 |
| December 1977 |
|
The Planet That Wasn't | Discus / Avon | Nonfiction | 133 |
| 1979 |
|
The Planet That Wasn't | Sphere | Nonfiction | 130 |