Scientifacts (Thrilling Wonder Stories, April 1939)
| First published | April 1939 |
|---|---|
| Type | Essay |
| Series | Scientifacts |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1939 |
|
Thrilling Wonder Stories, April 1939 | Better Publications, Inc. | MAGAZINE | 86 |