Letter (A Letter from the German Interplanetary Society)
| First published | January 1931 |
|---|---|
| Type | Essay |
| Series | Letters: Willy Ley |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| January 1931 |
|
Wonder Stories, January 1931 | Stellar Publishing Corporation | MAGAZINE | 900|900.2 |