"We Need a Heuristic ... "
| First published | July 1959 |
|---|---|
| Type | Essay |
Publications (2)
| Date | Publication | Publisher | Type | Page |
|---|---|---|---|---|
| July 1959 | Astounding Science Fiction, July 1959 | Street & Smith Publications, Inc. | MAGAZINE | 6 |
| December 1959 | Astounding Science Fiction, December 1959 | Atlas Publishing and Distribution Co. Ltd | MAGAZINE | 2 |