John E. Gregory, M.D.
1 work in English-language magazines
| Date | Page | Type | Title | Magazine |
|---|---|---|---|---|
| November 1972 | 172|172.1 | Essay | Letter (Analog, November 1972) | Analog Science Fiction/Science Fact, November 1972 |
1 work in English-language magazines
| Date | Page | Type | Title | Magazine |
|---|---|---|---|---|
| November 1972 | 172|172.1 | Essay | Letter (Analog, November 1972) | Analog Science Fiction/Science Fact, November 1972 |