Stamps of China, PRC, 26 May 2018
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2018, May 26 Famous Chinese Scientists 2018 issue unwmk p. Syncopated 13.5
| - | 1.20y | multi | Li Shizhen | |||
| - | 1.20y | multi | Compendium of Materia Medica by Li Shizhen | |||
| - | 1.20y | multi | Song Yingxing | |||
| - | 1.20y | multi | The Exploitation of the Works of Nature by Song Yingxing |
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