Letter (Astounding Stories, June 1937): Parsons' Hypothosis.
| First published | June 1937 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| June 1937 |
|
Astounding Stories, June 1937 | Street & Smith Publications, Inc. | MAGAZINE | 158|158.3 |