| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1968 |
|
Analog Science Fiction -> Science Fact, April 1968 | Condé Nast | MAGAZINE | 5 |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1968 |
|
Analog Science Fiction -> Science Fact, April 1968 | Condé Nast | MAGAZINE | 5 |