Wissenschaft 12 09 2012 - MP3-StereoTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoYewhala, Tekle2 መስከረም 2005ረቡዕ፣ መስከረም 2 2005https://p.dw.com/p/167bVማስታወቂያ