Foreword (Barlowe's Guide to Extraterrestrials)
| First published | June 1987 |
|---|---|
| Type | Essay |
| Series | Silverberg's Essays: Others' Work |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| June 1987 |
|
Barlowe's Guide to Extraterrestrials | Workman Publishing | Nonfiction | |
| September 1987 |
|
Barlowe's Guide to Extraterrestrials | Workman Publishing | Nonfiction |