Change of Time and States
| First published | April 1982 |
|---|---|
| Type | Essay |
| Series | Asimov's Essays: F&SF |
Publications (3)
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1982 |
|
The Magazine of Fantasy & Science Fiction, April 1982 | Mercury Press, Inc. | MAGAZINE | 133 |
| February 1984 |
|
X Stands for Unknown | Doubleday | Nonfiction | 120 |
| March 1985 |
|
X Stands for Unknown | Discus / Avon | Nonfiction | 120 |