When did Horizon Season 13 Episode 4 air?
Horizon Season 13 Episode 4 aired on January 26, 1976.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 13 · Episode 4
The Incredible Machine
Jan 26, 1976·1h
This episode of Horizon explores what actually happens inside our bodies using new optical techniques.
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How long is Horizon Season 13 Episode 4?
This episode runs for approximately 60 minutes.
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