Letter (Astounding, July 1938): Maybe It's Done with Mirrors Instead of Math?
| First published | July 1938 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| July 1938 |
|
Astounding Science-Fiction, July 1938 | Street & Smith Publications, Inc. | MAGAZINE | 157 |