When did Horizon Season 6 Episode 33 air?
Horizon Season 6 Episode 33 aired on December 1, 1969.


Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Horizon reports on the development of the Dutch nation's continuing fight against the encroachment of the sea.
Direct answers for episode-level questions and details.
Horizon Season 6 Episode 33 aired on December 1, 1969.
This episode runs for approximately 60 minutes.
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