Letter (Astounding, June 1939): The Details on That Transmutation Aren't Known Yet.
| First published | June 1939 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| June 1939 |
|
Astounding Science-Fiction, June 1939 | Street & Smith Publications, Inc. | MAGAZINE | 117 |