Letter (Mr. Vincent and Mr. Campbell Will Answer These) (response)
| First published | July 1931 |
|---|---|
| Type | Essay |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| July 1931 |
|
Amazing Stories Quarterly, Summer 1931 | Radio-Science Publications, Inc. | MAGAZINE | 432|432.2 |