A cautious estimate puts the word count below 37,000
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| August 1974 |
|
Seed of the Gods | Berkley Medallion | Chapbook | 5 |
| August 1974 |
|
Seed of the Gods | Berkley Medallion | Chapbook | 5 |
| September 1976 |
|
Urania #705 | Mondadori | MAGAZINE | |
| June 1979 |
|
Unter Millionen von katalogisierten Gestirnen gab es eine kleine gelbe Sonne mit einer Schar von Planeten ... | Goldmann | Chapbook | 5 |
| January 1980 |
|
Seed of the Gods | Robert Hale | Chapbook | |
| June 1996 |
|
UFOs: The Greatest Stories | MJF Books | Anthology | 213 |