H. Spencer Jones
2 English-language books
| Year | Type | Title | Author(s) |
|---|---|---|---|
| 1935 | Nonfiction | Worlds Without End | H. Spencer Jones |
| 1940 | Nonfiction | Life on Other Worlds | H. Spencer Jones |
2 English-language books
| Year | Type | Title | Author(s) |
|---|---|---|---|
| 1935 | Nonfiction | Worlds Without End | H. Spencer Jones |
| 1940 | Nonfiction | Life on Other Worlds | H. Spencer Jones |