ሳይንስየፀሀይ ግርዶሽና የኢትዮጵያ ጥንታዊ የሥነ-ፈለግ ምርምርTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoሳይንስTsehai Filatie17 ሰኔ 2012ረቡዕ፣ ሰኔ 17 2012https://p.dw.com/p/3eHLMማስታወቂያ