NOVAفصل 8 افزودن تصویرشماره قسمت13The Great Violin MysteryOverviewA great secret lies locked inside the master violins created by Italian craftsmen like Antonio Stradivari in the 17th and 18th centuries. Now, a Wisconsin physicist, working alone in his cellar, may have solved the violin mystery.Air dateOctober 11, 1981Runtime (min)60