| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1971 |
|
Analog Science Fiction/Science Fact, April 1971 | Condé Nast | MAGAZINE | 4 |
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| April 1971 |
|
Analog Science Fiction/Science Fact, April 1971 | Condé Nast | MAGAZINE | 4 |