Letter (Authentic Science Fiction Monthly, April 15, 1955): Swaps
| First published | April 1955 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1955 |
|
Authentic Science Fiction Monthly, April 15, 1955 | Hamilton & Co. | MAGAZINE | 141|141.1 |