Wissenschaft 01 08 2012(Industrie Revolution) - MP3-StereoTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoYewhala, Tekle25 ሐምሌ 2004ረቡዕ፣ ሐምሌ 25 2004https://p.dw.com/p/15htvማስታወቂያ