African Men of Science Congress 1987
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1987
African Men of Science Congress
10. September Wz: Keine Design: M.R. Olden. Gravieren: Edila. Zähnung: 13 x 12½
![[African Men of Science Congress, Typ AOY]](https://www.stampworld.com/media/catalogue/Congo,-Rep./Postage-stamps/AOY-s.jpg)
![[African Men of Science Congress, Typ AOZ]](https://www.stampworld.com/media/catalogue/Congo,-Rep./Postage-stamps/AOZ-s.jpg)
![[African Men of Science Congress, Typ APA]](https://www.stampworld.com/media/catalogue/Congo,-Rep./Postage-stamps/APA-s.jpg)
