How Do They Do It?

How Do They Do It?

Series 15 - Episode 15

Tue 24 Dec 10pm - 10:30pm Discovery Science
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Wed 25 Dec, 1am - 1:30am Discovery Science
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Summary

How do they produce 99% of America's raisins in California's San Joaquin Valley? Plus, how do they make the world's oldest type of paper?
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