First Day Cover
首日封
Sobrescrito de 1.º Dia
South Korea Science in Korea (2nd Series)
Date of Issue : 21 April 2016
The stamp set features Jang Yeong-sil (蔣英實), Heo Jun (許浚) and Lee Tae-kyu (李泰圭).
Jang Yeong-sil (1390-1450) is one of the world's best technicians who led science and technology during the Joseon Dynasty. Heo Jun (1539-1615) is one of the scientists who greatly improved traditional medicine. Finally, Lee Tae-Kyu (1902-1992) was a theoretical chemist who worked in Japan and the United States.
(The information above is from : http://www.korea.or.jp/NewsFocus/Culture/view?articleId=135466)
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