Universes for Lenses
| First published | September 1940 |
|---|---|
| Type | Essay |
Publications (2)
| Date | Publication | Publisher | Type | Page |
|---|---|---|---|---|
| September 1940 | Astounding Science-Fiction, September 1940 | Street & Smith Publications, Inc. | MAGAZINE | 41 |
| September 1940 | Astounding Science-Fiction, September 1940 | Atlas Publishing and Distribution Co. Ltd | MAGAZINE | 27 |