ሳይንስብሔራዊ ፈተና በኢትዮጵያTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስMerga Yonas Bula17 ግንቦት 2010ዓርብ፣ ግንቦት 17 2010https://p.dw.com/p/2yLLNማስታወቂያ