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How It's Made

6:30 AM to 7:00 AM
Monday 13 July
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Retractable Ballpoint Pens/Solar Salt/Tubas

Season 14 Episode 13 of 13

The manufacture of retractable ballpoint pens, solar salt and tubas

How It's Made airs on Discovery Channel HD at 6:30 AM, Monday 13 July. (Subtitles.)
Learn more about How It's Made and other education/science/factual topics on our factual page
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