Letter (Astounding, March 1938): It's True Mant Must Have Arisen as a Mutant.
| First published | March 1938 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| March 1938 |
|
Astounding Science-Fiction, March 1938 | Street & Smith Publications, Inc. | MAGAZINE | 114|114.2 |