How Do They Do It? Season 9 Episode 11 Leather Footballs, Mussels ( Air Date 2012-09-13 ) Genre Documentary category. Overview "How do they craft footballs for the National Football League? How do they farm mussels? How do they design the ultimate fighter pilot's helmet?".
How Do They Do It? Season 9 Episode 11 Leather Footballs, Mussels
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