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How Do They Do It?: Season 12

12x08 Harp Strings; Roof Windows; Belgian Waffles
TV-G

  • 2015-07-04T02:00:00Z on Discovery
  • 22m
  • United States
  • English
  • Documentary
Making the world's finest harp strings; Building roof windows that can keep out a hurricane; Making Belgian waffles.
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