TÜR 0412 PISA StudieTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoBartlick Silke04.12.20074 Aralık 2007turkisch: TÜR 0412 PISA Studie - Produziert: 04.12.2007 - 15:27:23 von Bartlick Silkehttps://p.dw.com/p/CWp9Reklam