Swiss Yodelling Series: "Jüüzli" of the Muotatal, A Swiss Yodelling Series: "Jüüzli" of the Muotatal - Yootzing and Yodelling
directed by Hugo Zemp, 1937-, in Swiss Yodelling Series: "Jüüzli" of the Muotatal (Watertown, MA: Documentary Educational Resources (DER), 1987), 50 mins
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