ሳይንስባለነጭ ባርኔጣ ኢትዮጵያውያን የኮምፒውተር ሰርጎ ገቦችTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስTesfalem Waldyes29 የካቲት 2009ረቡዕ፣ የካቲት 29 2009https://p.dw.com/p/2Yqnoማስታወቂያ