Twin Worlds
| First published | 1967 |
|---|---|
| Series | Professor Jameson #4 |
| Publisher | Ace Books |
| Format | Paperback |
| Type | Collection |
| Catalog ID | G-681 |
| Cover art | Morrow |
| Pages | 157 |
| Price | $0.50 |
- Twin Worlds copyright 1967 by Neil R. Jones.
- No publication date or printing line number in book.
- "First Book Publication" on cover.
- "Cover: Morrow" on back cover.
- "Professor Jameson Space Adventure #4" on front cover.
| Page | Title | Author(s) | Type |
|---|---|---|---|
| 7 | Twin Worlds | Neil R. Jones | Novella |
| 66 | On the Planet Fragment | Neil R. Jones | Novella |
| 112 | The Music-Monsters | Neil R. Jones | Novella |