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Sentieri e avvistamenti

mit Valentin Carron, Marcel Croubalian, Thomas Galler, Herve Graumann, San Keller, Barbara Mühlefluh, Nathalie Novarina, Didier Rittener, Eric Schumacher, Hans Stalder, Christine Streuli, Robert Suermondt, Alexia Walther, Markus Wetzel ...