Letter (Astounding Stories, October 1937): Celestial Mechanics.
| First published | October 1937 |
|---|---|
| Type | Essay |
Publications (1)
| Date | Publication | Publisher | Type | Page |
|---|---|---|---|---|
| October 1937 | Astounding Stories, October 1937 | Street & Smith Publications, Inc. | MAGAZINE | 158|158.2 |