Secret Barrier X
Frederik Pohl & Forrest J. Ackerman
| First published | August 1972 |
|---|---|
| Type | Editor |
| Series | Perry Rhodan in English › Perry Rhodan (US) #16 |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| August 1972 |
|
Perry Rhodan #16: Secret Barrier X | Ace Books | MAGAZINE | |
| 1974 |
|
Perry Rhodan #16: Secret Barrier X | Ace Books | MAGAZINE |