Hellow guys, Welcome to my website, and you are watching [과학기술의 거목들 시리즈] 3. 김정식 대한민국 과학기술유공자. and this vIdeo is uploaded by 한국과학기술한림원 at 2021-01-19T20:23:38-08:00. We are pramote this video only for entertainment and educational perpose only. So, I hop you like our website.
