Wissenschaft 13 06 2012 - MP3-StereoTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoYewhala, Tekle6 ሰኔ 2004ረቡዕ፣ ሰኔ 6 2004https://p.dw.com/p/15DeZማስታወቂያ