Wissenschaft 25 04 2012(Windenergie) - MP3-StereoTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoYewhala, Tekle17 ሚያዝያ 2004ረቡዕ፣ ሚያዝያ 17 2004https://p.dw.com/p/14l06ማስታወቂያ