R. O. Marks, Jr.
1 work in English-language magazines
| Date | Page | Type | Title | Magazine |
|---|---|---|---|---|
| April 1930 | 129|129.3 | Essay | Letter (Astounding Stories of Super-Science, April 1930) | Astounding Stories of Super-Science, April 1930 |
1 work in English-language magazines
| Date | Page | Type | Title | Magazine |
|---|---|---|---|---|
| April 1930 | 129|129.3 | Essay | Letter (Astounding Stories of Super-Science, April 1930) | Astounding Stories of Super-Science, April 1930 |