The Fifth International Microbiological Congress - Rio de Janeiro 1950
Now showing: Brazil - Postage stamps - 1950 - The Fifth International Microbiological Congress - Rio de Janeiro - 1 stamps.
1950
The Fifth International Microbiological Congress - Rio de Janeiro
23. August WM: 16 Perforation: 11 x 12
![[The Fifth International Microbiological Congress - Rio de Janeiro, type AAX]](https://www.stampworld.com/media/catalogue/Brazil/Postage-stamps/AAX-s.jpg)