Hellow guys, Welcome to my website, and you are watching [과학1열] 동위원소 '악티늄' 전쟁…방사성 동위원소 치료제란? / YTN 사이언스. and this vIdeo is uploaded by YTN 사이언스 투데이 at 2025-05-27T01:23:53-07:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
