ሰኔ -30-2020 LightCounting: የኦፕቲካል ኮሙኒኬሽን ኢንዱስትሪ ከ COVID-19 ለማገገም የመጀመሪያው ይሆናል
NgoJuni-30-2020 Ukukhanya kweLight: Umzi mveliso wezonxibelelwano obonakalayo uya kuba ngowokuqala ukufumana kwakhona kwi-COVID-19