ኢትዮጵያዊው ኬሚስት ዶክተር ካህሳይ ወልደ ጊዮርጊስTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoHirut Melesse12 ነሐሴ 2007ማክሰኞ፣ ነሐሴ 12 2007https://p.dw.com/p/1GHRjማስታወቂያ