When did Horizon Season 11 Episode 32 air?
Horizon Season 11 Episode 32 aired on December 23, 1974.
Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 11 · Episode 32
How on Earth Did They Do That?
Dec 23, 1974·1h
This documentary by Horizon reports on the development of cinematographic special effects from 1890's to date.
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Direct answers for episode-level questions and details.
How long is Horizon Season 11 Episode 32?
This episode runs for approximately 60 minutes.
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