| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1996 |
|
At the Earth's Core / A Princess of Mars | The Easton Press | Omnibus |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| 1996 |
|
At the Earth's Core / A Princess of Mars | The Easton Press | Omnibus |