The 11th International Congress on Clinical Chemistry 1981
Now showing: Austria - Postage stamps - 1981 - The 11th International Congress on Clinical Chemistry - 1 stamps.
1981
The 11th International Congress on Clinical Chemistry
31. August WM: None Sheetsize: 50 Design: Adalbert Pilch y Rudolf Toth. Perforation: 14¼ x 13¾
![[The 11th International Congress on Clinical Chemistry, type ATU]](https://www.stampworld.com/media/catalogue/Austria/Postage-stamps/ATU-s.jpg)
