When did Horizon Season 9 Episode 20 air?
Horizon Season 9 Episode 20 aired on July 10, 1972.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 9 · Episode 20
The Life that Lives on Man
Jul 10, 1972·1h
This episode of Horizon explores bacteria and other creatures that live on our skin and in our hair.
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How long is Horizon Season 9 Episode 20?
This episode runs for approximately 60 minutes.
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