| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| February 1969 |
|
Analog Science Fiction/Science Fact, February 1969 | Condé Nast | MAGAZINE | 5 |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| February 1969 |
|
Analog Science Fiction/Science Fact, February 1969 | Condé Nast | MAGAZINE | 5 |