The 39th Convention of the International Institute of Statistics 1973
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1973
The 39th Convention of the International Institute of Statistics
20. August WM: None Sheetsize: 50 Design: Adalbert Pilch y Kurt Leitgeb. Perforation: 14½ x 13¾
![[The 39th Convention of the International Institute of Statistics, type AJW]](https://swmedia-4cd6.kxcdn.com/media/catalogue/Austria/Postage-stamps/AJW-s.jpg)
