Two Worlds in Peril
| First published | February 1957 |
|---|---|
| Type | Short Fiction |
| Length | Novella |
Publications (2)
| Date | Publication | Publisher | Type | Page |
|---|---|---|---|---|
| February 1957 | Science Fiction Adventures, February 1957 | Royal Publications, Inc. | MAGAZINE | 5 |
| May 1958 | Science Fiction Adventures, No. 2 | Nova Publications Ltd. | MAGAZINE | 48 |