David E. Penney
1 work in English-language magazines
| Date | Page | Type | Title | Magazine |
|---|---|---|---|---|
| June 1967 | 157|157.2 | Essay | Letter (Analog, June 1967) | Analog Science Fiction -> Science Fact, June 1967 |
1 work in English-language magazines
| Date | Page | Type | Title | Magazine |
|---|---|---|---|---|
| June 1967 | 157|157.2 | Essay | Letter (Analog, June 1967) | Analog Science Fiction -> Science Fact, June 1967 |