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Planets |
Gamma Hydra IV1 Entire population of a Federation science colony died of apparent old age here1 |
| Yellow text = Canon source | Green text = Backstage source | White text = DITL speculation |
| # | Series | Season | Source | Comment |
| 1 | TOS | 2 | The Deadly Years |
| Series: | TOS Season 2 (Disc 3) |
| Source: | The Deadly Years |
| Copyright Graham Kennedy | Page views : 40 | Last updated : 1 Jan 1970 |
