Wissenschaft 18 07 2012 (Wasserstoff-Batterie und Elektroflugzeug) - MP3-StereoTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoYewhala, Tekle11 ሐምሌ 2004ረቡዕ፣ ሐምሌ 11 2004https://p.dw.com/p/15Zq4ማስታወቂያ