The 40th Meeting of the International Statistical Institute (ISI) 1975
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1975
The 40th Meeting of the International Statistical Institute (ISI)
1. September Wz: Keine Bogengröße: 30 Design: K. Rogaczewska Gravieren: PWPW. Zähnung: 11½:11
![[The 40th Meeting of the International Statistical Institute (ISI), Typ BWM]](https://www.stampworld.com/media/catalogue/Poland/Postage-stamps/BWM-s.jpg)
