ﺩﺭﺍﺳﺔ ﺟﺪﻳﺪﺓ ﺣﻮﻝ ﻣﺪﺓ ﺑﻘﺎء ﻓﻴﺮﻭﺱ ﻛﻮﺭﻭﻧﺎ ﻋﻠﻰ ﺍﻷﺳﻄﺢ
ﺩﺭﺍﺳﺔ ﺟﺪﻳﺪﺓ ﺣﻮﻝ ﻣﺪﺓ ﺑﻘﺎء ﻓﻴﺮﻭﺱ ﻛﻮﺭﻭﻧﺎ ﻋﻠﻰ ﺍﻷﺳﻄﺢ
Your browser does not support the video tag.
