Hector D. Spear
1 work in English-language magazines
| Date | Page | Type | Title | Magazine |
|---|---|---|---|---|
| December 1930 | 423|423.3 | Essay | Letter (Astounding Stories of Super-Science, December 1930) | Astounding Stories of Super-Science, December 1930 |
1 work in English-language magazines
| Date | Page | Type | Title | Magazine |
|---|---|---|---|---|
| December 1930 | 423|423.3 | Essay | Letter (Astounding Stories of Super-Science, December 1930) | Astounding Stories of Super-Science, December 1930 |