The 2nd International Conference on Global Impacts of Applied Microbiology, Addis Ababa 1967
Now showing: Ethiopia - Postage stamps - 1967 - The 2nd International Conference on Global Impacts of Applied Microbiology, Addis Ababa - 3 stamps.
1967
The 2nd International Conference on Global Impacts of Applied Microbiology, Addis Ababa
6. November WM: None Perforation: 13½