China FDC on "Ancient Chinese Scientists and Their Works I"

First Day Cover
首日封
Sobrescrito de 1.º Dia

China


Ancient Chinese Scientists and Their Works I

Date of Issue : 26 May 2018

4-1 : Li Shizhen (1518 - 1593)
4-2 : Compendium of Materia Medica
4-3 : Song Yingxing (1587 - ?)
4-4 : The Exploitation of the Works of Nature