Letter (Astounding, May 1938): H. C. McKay on Light and Perception.
| First published | May 1938 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| May 1938 |
|
Astounding Science-Fiction, May 1938 | Street & Smith Publications, Inc. | MAGAZINE | 151 |