Crown of Thorns

Aug 31, 1970 on BBC TWO at 9:00 PM
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Summary

The population explosion of the Crown of Thorns starfish is investigated by Horizon.

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Don't Get Sick in America
Season 1970 Episode 21

Aug 24, 1970

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Noah's Ark in Kensington
Season 1970 Episode 23

Sep 07, 1970