ሳይንስሒሳብና ስታትስቲክስ ለሳይንስTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስShewangizaw Wogaehu13 የካቲት 2011ረቡዕ፣ የካቲት 13 2011https://p.dw.com/p/3DkZsማስታወቂያ